From 4de29626b7e0230d48424303ce851c5f03d7e748 Mon Sep 17 00:00:00 2001
From: Zhi Guan <guanzhi1980@gmail.com>
Date: Fri, 26 Jun 2026 22:06:57 +0800
Subject: [PATCH] Format help message

---
 CMakeLists.txt          |  2 +-
 include/gmssl/version.h |  2 +-
 tools/certgen.c         |  4 ++--
 tools/certparse.c       |  1 +
 tools/certrevoke.c      |  1 +
 tools/crlget.c          |  2 +-
 tools/crlparse.c        |  1 +
 tools/ghash.c           |  8 ++++----
 tools/p256keygen.c      |  4 ++--
 tools/quic_help.h       |  8 ++++----
 tools/reqgen.c          |  2 +-
 tools/reqparse.c        |  1 +
 tools/reqsign.c         |  2 +-
 tools/sdfdecrypt.c      |  6 +++---
 tools/sdfdigest.c       |  8 ++++----
 tools/sdfencrypt.c      |  6 +++---
 tools/sdfexport.c       |  4 ++--
 tools/sdfinfo.c         |  2 +-
 tools/sdfsign.c         |  6 +++---
 tools/sdftest.c         |  2 +-
 tools/skfutil.c         |  1 +
 tools/sm2decrypt.c      |  6 +++---
 tools/sm2encrypt.c      |  6 +++---
 tools/sm2keygen.c       |  4 ++--
 tools/sm2sign.c         |  6 +++---
 tools/sm2verify.c       |  6 +++---
 tools/sm3.c             |  8 ++++----
 tools/sm3_pbkdf2.c      |  4 ++--
 tools/sm3hmac.c         |  8 ++++----
 tools/sm4.c             |  9 ++++-----
 tools/sm4_cbc.c         | 12 ++++++------
 tools/sm4_cbc_mac.c     | 18 +++++++++---------
 tools/sm4_ccm.c         |  8 ++++----
 tools/sm4_cfb.c         | 16 ++++++++--------
 tools/sm4_ctr.c         |  8 ++++----
 tools/sm4_ecb.c         |  6 +++---
 tools/sm4_ff1.c         |  6 +++---
 tools/sm4_gcm.c         |  8 ++++----
 tools/sm4_ofb.c         |  8 ++++----
 tools/sm4_xts.c         | 10 +++++-----
 tools/sm9decrypt.c      |  8 ++++----
 tools/sm9encrypt.c      |  8 ++++----
 tools/sm9keygen.c       | 10 +++++-----
 tools/sm9setup.c        |  4 ++--
 tools/sm9sign.c         |  8 ++++----
 tools/sm9verify.c       |  8 ++++----
 tools/tlcp_help.h       |  8 ++++----
 tools/tls12_help.h      | 10 +++++-----
 tools/tls13_help.h      |  8 ++++----
 49 files changed, 153 insertions(+), 149 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ca84604e..3eb0f04d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1026,7 +1026,7 @@ endif()
 #
 set(CPACK_PACKAGE_NAME "GmSSL")
 set(CPACK_PACKAGE_VENDOR "GmSSL develop team")
-set(CPACK_PACKAGE_VERSION "3.3.0-dev.1174")
+set(CPACK_PACKAGE_VERSION "3.3.0-dev.1175")
 set(CPACK_PACKAGE_DESCRIPTION_FILE ${PROJECT_SOURCE_DIR}/README.md)
 set(CPACK_NSIS_MODIFY_PATH ON)
 include(CPack)
diff --git a/include/gmssl/version.h b/include/gmssl/version.h
index d893c479..6085c353 100644
--- a/include/gmssl/version.h
+++ b/include/gmssl/version.h
@@ -18,7 +18,7 @@ extern "C" {
 
 
 #define GMSSL_VERSION_NUM	30300
-#define GMSSL_VERSION_STR	"GmSSL 3.3.0-dev.1174"
+#define GMSSL_VERSION_STR	"GmSSL 3.3.0-dev.1175"
 
 int gmssl_version_num(void);
 const char *gmssl_version_str(void);
diff --git a/tools/certgen.c b/tools/certgen.c
index 7d7156e8..20a541ae 100644
--- a/tools/certgen.c
+++ b/tools/certgen.c
@@ -59,7 +59,7 @@ static char *usage =
 "                                   the default string '1234567812345678' is used\n"
 "    -out file                    Output certificate file in PEM format\n"
 "\n"
-"  Subject and Issuer options\n"
+"    Subject and Issuer options\n"
 "\n"
 "    -C  str                      Country\n"
 "    -ST str                      State or province name\n"
@@ -68,7 +68,7 @@ static char *usage =
 "    -OU str                      Organizational unit\n"
 "    -CN str                      Common name\n"
 "\n"
-"  Extension options\n"
+"    Extension options\n"
 "\n"
 "    -gen_authority_key_id        Generate AuthorityKeyIdentifier extension use SM3\n"
 "    -gen_subject_key_id          Generate SubjectKeyIdentifier extension use SM3\n"
diff --git a/tools/certparse.c b/tools/certparse.c
index 5bd1c869..502baa07 100644
--- a/tools/certparse.c
+++ b/tools/certparse.c
@@ -49,6 +49,7 @@ int certparse_main(int argc, char **argv)
 		if (!strcmp(*argv, "-help")) {
 			printf("usage: gmssl %s %s\n\n", prog, options);
 			printf("%s\n", usage);
+			ret = 0;
 			goto end;
 		} else if (!strcmp(*argv, "-in")) {
 			if (--argc < 1) goto bad;
diff --git a/tools/certrevoke.c b/tools/certrevoke.c
index 8d111026..7202ec05 100644
--- a/tools/certrevoke.c
+++ b/tools/certrevoke.c
@@ -76,6 +76,7 @@ int certrevoke_main(int argc, char **argv)
 		if (!strcmp(*argv, "-help")) {
 			printf("usage: gmssl %s %s\n\n", prog, options);
 			printf("%s", usage);
+			ret = 0;
 			goto end;
 		} else if (!strcmp(*argv, "-in")) {
 			if (--argc < 1) goto bad;
diff --git a/tools/crlget.c b/tools/crlget.c
index c2b91f03..e81fe73c 100644
--- a/tools/crlget.c
+++ b/tools/crlget.c
@@ -53,6 +53,7 @@ int crlget_main(int argc, char **argv)
 		if (!strcmp(*argv, "-help")) {
 			printf("usage: gmssl %s %s\n\n", prog, usage);
 			printf("%s\n", options);
+			ret = 0;
 			goto end;
 		} else if (!strcmp(*argv, "-cert")) {
 			if (--argc < 1) goto bad;
@@ -156,4 +157,3 @@ end:
 	if (outfile && outfp) fclose(outfp);
 	return ret;
 }
-
diff --git a/tools/crlparse.c b/tools/crlparse.c
index f591d14d..0cdd3686 100644
--- a/tools/crlparse.c
+++ b/tools/crlparse.c
@@ -44,6 +44,7 @@ int crlparse_main(int argc, char **argv)
 	while (argc > 0) {
 		if (!strcmp(*argv, "-help")) {
 			printf("usage: %s %s\n", prog, options);
+			ret = 0;
 			goto end;
 		} else if (!strcmp(*argv, "-in")) {
 			if (--argc < 1) goto bad;
diff --git a/tools/ghash.c b/tools/ghash.c
index 8f452650..04397793 100644
--- a/tools/ghash.c
+++ b/tools/ghash.c
@@ -35,10 +35,10 @@ static const char *help =
 "\n"
 "Examples\n"
 "\n"
-"  $ TEXT=`gmssl rand -outlen 20 -hex`\n"
-"  $ KEY=`gmssl rand -outlen 16 -hex`\n"
-"  $ AAD=\"The AAD Data\"\n"
-"  $ gmssl ghash -h $KEY -aad $AAD -in_str $TEXT\n"
+"    TEXT=`gmssl rand -outlen 20 -hex`\n"
+"    KEY=`gmssl rand -outlen 16 -hex`\n"
+"    AAD=\"The AAD Data\"\n"
+"    gmssl ghash -h $KEY -aad $AAD -in_str $TEXT\n"
 "\n";
 
 
diff --git a/tools/p256keygen.c b/tools/p256keygen.c
index 5db54713..e1c38fc0 100644
--- a/tools/p256keygen.c
+++ b/tools/p256keygen.c
@@ -29,8 +29,8 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"    $ gmssl p256keygen -pass P@ssw0rd -out p256.pem\n"
-"    $ gmssl p256keygen -pass P@ssw0rd -out p256.pem -pubout p256pub.pem\n"
+"    gmssl p256keygen -pass P@ssw0rd -out p256.pem\n"
+"    gmssl p256keygen -pass P@ssw0rd -out p256.pem -pubout p256pub.pem\n"
 "\n";
 
 int p256keygen_main(int argc, char **argv)
diff --git a/tools/quic_help.h b/tools/quic_help.h
index 07b293ab..a97c687a 100644
--- a/tools/quic_help.h
+++ b/tools/quic_help.h
@@ -1,14 +1,14 @@
 "\n"
 "Supported cipher suites:\n"
 #if defined(ENABLE_AES) && defined(ENABLE_SHA2)
-"      TLS_AES_128_GCM_SHA256\n"
+"    TLS_AES_128_GCM_SHA256\n"
 #ifdef ENABLE_AES_CCM
-"      TLS_AES_128_CCM_SHA256\n"
+"    TLS_AES_128_CCM_SHA256\n"
 #endif
 #endif
-"      TLS_SM4_GCM_SM3\n"
+"    TLS_SM4_GCM_SM3\n"
 #ifdef ENABLE_SM4_CCM
-"      TLS_SM4_CCM_SM3\n"
+"    TLS_SM4_CCM_SM3\n"
 #endif
 "\n"
 "Examples\n"
diff --git a/tools/reqgen.c b/tools/reqgen.c
index 1c75203e..f68b02a1 100644
--- a/tools/reqgen.c
+++ b/tools/reqgen.c
@@ -50,7 +50,7 @@ static char *usage =
 "                                   the default string '1234567812345678' is used\n"
 "    -out file                    Output Certificate Request (CSR) file in PEM format\n"
 "\n"
-"  Subject options\n"
+"    Subject options\n"
 "\n"
 "    -C  str                      Country\n"
 "    -ST str                      State or province name\n"
diff --git a/tools/reqparse.c b/tools/reqparse.c
index 3a9e1c6e..26238a06 100644
--- a/tools/reqparse.c
+++ b/tools/reqparse.c
@@ -35,6 +35,7 @@ int reqparse_main(int argc, char **argv)
 	while (argc > 0) {
 		if (!strcmp(*argv, "-help")) {
 			printf("usage: %s %s\n", prog, options);
+			ret = 0;
 			goto end;
 		} else if(!strcmp(*argv, "-in")) {
 			if (--argc < 1) goto bad;
diff --git a/tools/reqsign.c b/tools/reqsign.c
index 4f45fad4..4d785c5a 100644
--- a/tools/reqsign.c
+++ b/tools/reqsign.c
@@ -68,7 +68,7 @@ static char *usage =
 "    -pass pass                   Password for decrypting private key file, prompt if not given\n"
 "    -out pem                     Output certificate file in PEM format\n"
 "\n"
-"  Extension options\n"
+"    Extension options\n"
 "\n"
 "    -gen_authority_key_id        Generate AuthorityKeyIdentifier extension use SM3\n"
 "    -gen_subject_key_id          Generate SubjectKeyIdentifier extension use SM3\n"
diff --git a/tools/sdfdecrypt.c b/tools/sdfdecrypt.c
index 5c3b3209..21d4ef07 100755
--- a/tools/sdfdecrypt.c
+++ b/tools/sdfdecrypt.c
@@ -36,9 +36,9 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"    $ gmssl sdfexport -encrypt -key 1 -lib libsoftsdf.so -out sm2encpub.pem\n"
-"    $ echo 'Secret message' | gmssl sdfencrypt -lib libsoftsdf.so -pubkey sm2encpub.pem -out sdf_ciphertext.bin\n"
-"    $ gmssl sdfdecrypt -lib libsoftsdf.so -key 1 -pass P@ssw0rd -in sdf_ciphertext.bin\n"
+"    gmssl sdfexport -encrypt -key 1 -lib libsoftsdf.so -out sm2encpub.pem\n"
+"    echo 'Secret message' | gmssl sdfencrypt -lib libsoftsdf.so -pubkey sm2encpub.pem -out sdf_ciphertext.bin\n"
+"    gmssl sdfdecrypt -lib libsoftsdf.so -key 1 -pass P@ssw0rd -in sdf_ciphertext.bin\n"
 "\n";
 
 int sdfdecrypt_main(int argc, char **argv)
diff --git a/tools/sdfdigest.c b/tools/sdfdigest.c
index 61bb6eb6..9b3c212c 100644
--- a/tools/sdfdigest.c
+++ b/tools/sdfdigest.c
@@ -50,13 +50,13 @@ static const char *help =
 "\n"
 "    gmssl sdfdigest -pubkey sm2pubkey.pem -id alice -in /path/to/file -bin\n"
 "\n"
-"  When reading from stdin, make sure the trailing newline character is removed\n"
+"    When reading from stdin, make sure the trailing newline character is removed\n"
 "\n"
-"  Linux/Mac:\n"
+"    Linux/Mac:\n"
 "    echo -n abc | gmssl sdfdigest\n"
 "\n"
-"  Windows:\n"
-"    C:\\> echo |set/p=\"abc\" | gmssl sdfdigest\n"
+"    Windows:\n"
+"    echo |set/p=\"abc\" | gmssl sdfdigest\n"
 "\n";
 
 
diff --git a/tools/sdfencrypt.c b/tools/sdfencrypt.c
index caa894c6..af3a460d 100755
--- a/tools/sdfencrypt.c
+++ b/tools/sdfencrypt.c
@@ -35,9 +35,9 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"    $ gmssl sdfexport -encrypt -key 1 -lib libsoftsdf.so -out sm2encpub.pem\n"
-"    $ echo 'Secret message' | gmssl sdfencrypt -lib libsoftsdf.so -pubkey sm2encpub.pem -out sdf_ciphertext.bin\n"
-"    $ gmssl sdfdecrypt -lib libsoftsdf.so -key 1 -pass P@ssw0rd -in sdf_ciphertext.bin\n"
+"    gmssl sdfexport -encrypt -key 1 -lib libsoftsdf.so -out sm2encpub.pem\n"
+"    echo 'Secret message' | gmssl sdfencrypt -lib libsoftsdf.so -pubkey sm2encpub.pem -out sdf_ciphertext.bin\n"
+"    gmssl sdfdecrypt -lib libsoftsdf.so -key 1 -pass P@ssw0rd -in sdf_ciphertext.bin\n"
 "\n";
 
 int sdfencrypt_main(int argc, char **argv)
diff --git a/tools/sdfexport.c b/tools/sdfexport.c
index c28de6a5..78ec7c1a 100644
--- a/tools/sdfexport.c
+++ b/tools/sdfexport.c
@@ -30,8 +30,8 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"    $ gmssl sdfexport -sign -key 1 -out sm2signpub.pem\n"
-"    $ gmssl sdfexport -encrypt -key 1 -out sm2signpub.pem\n"
+"    gmssl sdfexport -sign -key 1 -out sm2signpub.pem\n"
+"    gmssl sdfexport -encrypt -key 1 -out sm2signpub.pem\n"
 "\n";
 
 
diff --git a/tools/sdfinfo.c b/tools/sdfinfo.c
index 6e393692..b1a4ac4e 100644
--- a/tools/sdfinfo.c
+++ b/tools/sdfinfo.c
@@ -26,7 +26,7 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"    $ gmssl sdfinfo\n"
+"    gmssl sdfinfo\n"
 "\n";
 
 
diff --git a/tools/sdfsign.c b/tools/sdfsign.c
index 90955f4f..ae16aa3c 100644
--- a/tools/sdfsign.c
+++ b/tools/sdfsign.c
@@ -32,9 +32,9 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"    $ echo -n 'message to be signed' | gmssl sdfsign -lib libsoftsdf.so -key 1 -pass P@ssw0rd -out sm2.sig\n"
-"    $ gmssl sdfexport -lib libsoftsdf.so -sign -key 1 -out sm2pub.pem\n"
-"    $ echo -n 'message to be signed' | gmssl sm2verify -pubkey sm2pub.pem -sig sm2.sig\n"
+"    echo -n 'message to be signed' | gmssl sdfsign -lib libsoftsdf.so -key 1 -pass P@ssw0rd -out sm2.sig\n"
+"    gmssl sdfexport -lib libsoftsdf.so -sign -key 1 -out sm2pub.pem\n"
+"    echo -n 'message to be signed' | gmssl sm2verify -pubkey sm2pub.pem -sig sm2.sig\n"
 "\n";
 
 
diff --git a/tools/sdftest.c b/tools/sdftest.c
index f8bffdbe..5dfbe5f8 100644
--- a/tools/sdftest.c
+++ b/tools/sdftest.c
@@ -38,7 +38,7 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"  $ gmssl sdftest -lib soft_sdf.so -kek 1 -key 1 -pass P@ssw0rd\n"
+"    gmssl sdftest -lib soft_sdf.so -kek 1 -key 1 -pass P@ssw0rd\n"
 "\n";
 
 
diff --git a/tools/skfutil.c b/tools/skfutil.c
index 044a86e4..73d51a4e 100644
--- a/tools/skfutil.c
+++ b/tools/skfutil.c
@@ -80,6 +80,7 @@ int skfutil_main(int argc, char **argv)
 	while (argc > 0) {
 		if (!strcmp(*argv, "-help")) {
 			print_usage(stdout, prog);
+			ret = 0;
 			goto end;
 		} else if (!strcmp(*argv, "-lib")) {
 			if (--argc < 1) goto bad;
diff --git a/tools/sm2decrypt.c b/tools/sm2decrypt.c
index 7cf27049..7dbb4c23 100644
--- a/tools/sm2decrypt.c
+++ b/tools/sm2decrypt.c
@@ -30,9 +30,9 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"    $ gmssl sm2keygen -pass P@ssw0rd -out sm2.pem -pubout sm2pub.pem\n"
-"    $ echo 'Secret message' | gmssl sm2encrypt -pubkey sm2pub.pem -out sm2.der\n"
-"    $ gmssl sm2decrypt -key sm2.pem -pass P@ssw0rd -in sm2.der\n"
+"    gmssl sm2keygen -pass P@ssw0rd -out sm2.pem -pubout sm2pub.pem\n"
+"    echo 'Secret message' | gmssl sm2encrypt -pubkey sm2pub.pem -out sm2.der\n"
+"    gmssl sm2decrypt -key sm2.pem -pass P@ssw0rd -in sm2.der\n"
 "\n";
 
 int sm2decrypt_main(int argc, char **argv)
diff --git a/tools/sm2encrypt.c b/tools/sm2encrypt.c
index 090026a4..25565b1c 100644
--- a/tools/sm2encrypt.c
+++ b/tools/sm2encrypt.c
@@ -29,9 +29,9 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"    $ gmssl sm2keygen -pass P@ssw0rd -out sm2.pem -pubout sm2pub.pem\n"
-"    $ echo 'Secret message' | gmssl sm2encrypt -pubkey sm2pub.pem -out sm2.der\n"
-"    $ gmssl sm2decrypt -key sm2.pem -pass P@ssw0rd -in sm2.der\n"
+"    gmssl sm2keygen -pass P@ssw0rd -out sm2.pem -pubout sm2pub.pem\n"
+"    echo 'Secret message' | gmssl sm2encrypt -pubkey sm2pub.pem -out sm2.der\n"
+"    gmssl sm2decrypt -key sm2.pem -pass P@ssw0rd -in sm2.der\n"
 "\n";
 
 int sm2encrypt_main(int argc, char **argv)
diff --git a/tools/sm2keygen.c b/tools/sm2keygen.c
index 573cec98..6e1fad8b 100644
--- a/tools/sm2keygen.c
+++ b/tools/sm2keygen.c
@@ -28,8 +28,8 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"    $ gmssl sm2keygen -pass P@ssw0rd -out sm2.pem\n"
-"    $ gmssl sm2keygen -pass P@ssw0rd -out sm2.pem -pubout sm2pub.pem\n"
+"    gmssl sm2keygen -pass P@ssw0rd -out sm2.pem\n"
+"    gmssl sm2keygen -pass P@ssw0rd -out sm2.pem -pubout sm2pub.pem\n"
 "\n";
 
 int sm2keygen_main(int argc, char **argv)
diff --git a/tools/sm2sign.c b/tools/sm2sign.c
index 0c07c76d..14024dca 100644
--- a/tools/sm2sign.c
+++ b/tools/sm2sign.c
@@ -31,9 +31,9 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"    $ gmssl sm2keygen -pass P@ssw0rd -out sm2.pem -pubout sm2pub.pem\n"
-"    $ echo -n 'message to be signed' | gmssl sm2sign -key sm2.pem -pass P@ssw0rd -out sm2.sig\n"
-"    $ echo -n 'message to be signed' | gmssl sm2verify -pubkey sm2pub.pem -sig sm2.sig\n"
+"    gmssl sm2keygen -pass P@ssw0rd -out sm2.pem -pubout sm2pub.pem\n"
+"    echo -n 'message to be signed' | gmssl sm2sign -key sm2.pem -pass P@ssw0rd -out sm2.sig\n"
+"    echo -n 'message to be signed' | gmssl sm2verify -pubkey sm2pub.pem -sig sm2.sig\n"
 "\n";
 
 
diff --git a/tools/sm2verify.c b/tools/sm2verify.c
index 9fbaf65b..057ceea6 100644
--- a/tools/sm2verify.c
+++ b/tools/sm2verify.c
@@ -30,9 +30,9 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"    $ gmssl sm2keygen -pass P@ssw0rd -out sm2.pem -pubout sm2pub.pem\n"
-"    $ echo -n 'message to be signed' | gmssl sm2sign -key sm2.pem -pass P@ssw0rd -out sm2.sig\n"
-"    $ echo -n 'message to be signed' | gmssl sm2verify -pubkey sm2pub.pem -sig sm2.sig\n"
+"    gmssl sm2keygen -pass P@ssw0rd -out sm2.pem -pubout sm2pub.pem\n"
+"    echo -n 'message to be signed' | gmssl sm2sign -key sm2.pem -pass P@ssw0rd -out sm2.sig\n"
+"    echo -n 'message to be signed' | gmssl sm2verify -pubkey sm2pub.pem -sig sm2.sig\n"
 "\n";
 
 
diff --git a/tools/sm3.c b/tools/sm3.c
index 9ee6bd9c..72fbffc3 100644
--- a/tools/sm3.c
+++ b/tools/sm3.c
@@ -48,13 +48,13 @@ static const char *help =
 "\n"
 "    gmssl sm3 -pubkey sm2pubkey.pem -id alice -in /path/to/file -bin\n"
 "\n"
-"  When reading from stdin, make sure the trailing newline character is removed\n"
+"    When reading from stdin, make sure the trailing newline character is removed\n"
 "\n"
-"  Linux/Mac:\n"
+"    Linux/Mac:\n"
 "    echo -n abc | gmssl sm3\n"
 "\n"
-"  Windows:\n"
-"    C:\\> echo |set/p=\"abc\" | gmssl sm3\n"
+"    Windows:\n"
+"    echo |set/p=\"abc\" | gmssl sm3\n"
 "\n";
 
 
diff --git a/tools/sm3_pbkdf2.c b/tools/sm3_pbkdf2.c
index 4002fc68..aee8f216 100644
--- a/tools/sm3_pbkdf2.c
+++ b/tools/sm3_pbkdf2.c
@@ -34,8 +34,8 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"  $ SALT=`gmssl rand -outlen 8 -hex`\n"
-"  $ gmssl sm3_pbkdf2 -pass P@ssw0rd -salt $SALT -iter 10000 -outlen 16 -hex\n"
+"    SALT=`gmssl rand -outlen 8 -hex`\n"
+"    gmssl sm3_pbkdf2 -pass P@ssw0rd -salt $SALT -iter 10000 -outlen 16 -hex\n"
 "\n";
 
 
diff --git a/tools/sm3hmac.c b/tools/sm3hmac.c
index e2b92a42..2efe5388 100644
--- a/tools/sm3hmac.c
+++ b/tools/sm3hmac.c
@@ -41,13 +41,13 @@ static const char *help =
 "\n"
 "    gmssl sm3hmac -key $KEY_HEX -in /path/to/file\n"
 "\n"
-"  When reading from stdin, make sure the trailing newline character is removed\n"
+"    When reading from stdin, make sure the trailing newline character is removed\n"
 "\n"
-"  Linux/Mac:\n"
+"    Linux/Mac:\n"
 "    echo -n abc | gmssl sm3hmac -key $KEY_HEX\n"
 "\n"
-"  Windows:\n"
-"    C:\\> echo |set/p=\"abc\" | gmssl sm3hmac -key 11223344556677881122334455667788\n"
+"    Windows:\n"
+"    echo |set/p=\"abc\" | gmssl sm3hmac -key 11223344556677881122334455667788\n"
 "\n";
 
 int sm3hmac_main(int argc, char **argv)
diff --git a/tools/sm4.c b/tools/sm4.c
index 7f41743f..87110eb6 100755
--- a/tools/sm4.c
+++ b/tools/sm4.c
@@ -177,7 +177,7 @@ static const char *usage =
 static const char *options =
 "Options\n"
 "\n"
-"  Modes\n"
+"    Modes\n"
 "\n"
 "    -ecb                ECB mode\n"
 "    -cbc                CBC mode with padding, need 16-byte key and 16-byte iv\n"
@@ -197,10 +197,9 @@ static const char *options =
 "    -in file | stdin    Input data\n"
 "    -out file | stdout  Output data\n"
 "\n"
-"Examples"
-"\n"
-"  echo \"hello\" | gmssl sm4 -gcm -encrypt -key 11223344556677881122334455667788 -iv 112233445566778811223344 -out ciphertext.bin\n"
-"  gmssl sm4 -gcm -decrypt -key 11223344556677881122334455667788 -iv 112233445566778811223344 -in ciphertext.bin\n"
+"Examples\n"
+"    echo \"hello\" | gmssl sm4 -gcm -encrypt -key 11223344556677881122334455667788 -iv 112233445566778811223344 -out ciphertext.bin\n"
+"    gmssl sm4 -gcm -decrypt -key 11223344556677881122334455667788 -iv 112233445566778811223344 -in ciphertext.bin\n"
 "\n";
 
 int sm4_main(int argc, char **argv)
diff --git a/tools/sm4_cbc.c b/tools/sm4_cbc.c
index bfa374df..c738acbf 100755
--- a/tools/sm4_cbc.c
+++ b/tools/sm4_cbc.c
@@ -35,13 +35,13 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"  KEY=`gmssl rand -outlen 16 -hex`\n"
-"  IV=`gmssl rand -outlen 16 -hex`\n"
-"  echo -n 0123456789abcdef | gmssl sm4_cbc -encrypt -key $KEY -iv $IV -out sm4_cbc_ciphertext.bin\n"
-"  gmssl sm4_cbc -decrypt -key $KEY -iv $IV -in sm4_cbc_ciphertext.bin\n"
+"    KEY=`gmssl rand -outlen 16 -hex`\n"
+"    IV=`gmssl rand -outlen 16 -hex`\n"
+"    echo -n 0123456789abcdef | gmssl sm4_cbc -encrypt -key $KEY -iv $IV -out sm4_cbc_ciphertext.bin\n"
+"    gmssl sm4_cbc -decrypt -key $KEY -iv $IV -in sm4_cbc_ciphertext.bin\n"
 "\n"
-"  echo -n abc | gmssl sm4_cbc -encrypt -pkcs7_padding -key $KEY -iv $IV -out sm4_cbc_ciphertext.bin\n"
-"  gmssl sm4_cbc -decrypt -pkcs7_padding -key $KEY -iv $IV -in sm4_cbc_ciphertext.bin\n"
+"    echo -n abc | gmssl sm4_cbc -encrypt -pkcs7_padding -key $KEY -iv $IV -out sm4_cbc_ciphertext.bin\n"
+"    gmssl sm4_cbc -decrypt -pkcs7_padding -key $KEY -iv $IV -in sm4_cbc_ciphertext.bin\n"
 "\n";
 
 int sm4_cbc_main(int argc, char **argv)
diff --git a/tools/sm4_cbc_mac.c b/tools/sm4_cbc_mac.c
index a7063926..f0c8acd8 100644
--- a/tools/sm4_cbc_mac.c
+++ b/tools/sm4_cbc_mac.c
@@ -35,20 +35,20 @@ static const char *help =
 "\n"
 "Examples\n"
 "\n"
-"  KEY=`gmssl rand -outlen 16 -hex`\n"
-"  gmssl sm4_cbc_mac -key $KEY -in_str abc\n"
+"    KEY=`gmssl rand -outlen 16 -hex`\n"
+"    gmssl sm4_cbc_mac -key $KEY -in_str abc\n"
 "\n"
-"  gmssl sm4_cbc_mac -key $KEY -in_str abc -bin\n"
+"    gmssl sm4_cbc_mac -key $KEY -in_str abc -bin\n"
 "\n"
-"  gmssl sm4_cbc_mac -key $KEY -in /path/to/file\n"
+"    gmssl sm4_cbc_mac -key $KEY -in /path/to/file\n"
 "\n"
-"  When reading from stdin, make sure the trailing newline character is removed\n"
+"    When reading from stdin, make sure the trailing newline character is removed\n"
 "\n"
-"  Linux/Mac:\n"
-"  echo -n abc | gmssl sm4_cbc_mac -key $KEY\n"
+"    Linux/Mac:\n"
+"    echo -n abc | gmssl sm4_cbc_mac -key $KEY\n"
 "\n"
-"  Windows:\n"
-"  echo |set/p=\"abc\" | gmssl sm4_cbc_mac -key 11223344556677881122334455667788\n"
+"    Windows:\n"
+"    echo |set/p=\"abc\" | gmssl sm4_cbc_mac -key 11223344556677881122334455667788\n"
 "\n";
 
 int sm4_cbc_mac_main(int argc, char **argv)
diff --git a/tools/sm4_ccm.c b/tools/sm4_ccm.c
index 515f0754..5cf3a3df 100755
--- a/tools/sm4_ccm.c
+++ b/tools/sm4_ccm.c
@@ -37,10 +37,10 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"  KEY=`gmssl rand -outlen 16 -hex`\n"
-"  IV=`gmssl rand -outlen 12 -hex`\n"
-"  echo -n abc | gmssl sm4_ccm -encrypt -key $KEY -iv $IV -aad_hex 001122 -out sm4_ccm_ciphertext.bin\n"
-"  gmssl sm4_ccm -decrypt -key $KEY -iv $IV -aad_hex 001122 -in sm4_ccm_ciphertext.bin\n"
+"    KEY=`gmssl rand -outlen 16 -hex`\n"
+"    IV=`gmssl rand -outlen 12 -hex`\n"
+"    echo -n abc | gmssl sm4_ccm -encrypt -key $KEY -iv $IV -aad_hex 001122 -out sm4_ccm_ciphertext.bin\n"
+"    gmssl sm4_ccm -decrypt -key $KEY -iv $IV -aad_hex 001122 -in sm4_ccm_ciphertext.bin\n"
 "\n";
 
 static uint8_t *read_content(FILE *infp, size_t *outlen, const char *prog)
diff --git a/tools/sm4_cfb.c b/tools/sm4_cfb.c
index 2553987b..e919e8c3 100755
--- a/tools/sm4_cfb.c
+++ b/tools/sm4_cfb.c
@@ -34,16 +34,16 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"  KEY=`gmssl rand -outlen 16 -hex`\n"
-"  IV=`gmssl rand -outlen 16 -hex`\n"
-"  echo -n abc | gmssl sm4_cfb -encrypt -key $KEY -iv $IV -out sm4_cfb128_ciphertext.bin\n"
-"  gmssl sm4_cfb -decrypt -key $KEY -iv $IV -in sm4_cfb128_ciphertext.bin\n"
+"    KEY=`gmssl rand -outlen 16 -hex`\n"
+"    IV=`gmssl rand -outlen 16 -hex`\n"
+"    echo -n abc | gmssl sm4_cfb -encrypt -key $KEY -iv $IV -out sm4_cfb128_ciphertext.bin\n"
+"    gmssl sm4_cfb -decrypt -key $KEY -iv $IV -in sm4_cfb128_ciphertext.bin\n"
 "\n"
-"  echo -n abc | gmssl sm4_cfb -sbytes 1 -encrypt -key $KEY -iv $IV -out sm4_cfb8_ciphertext.bin\n"
-"  gmssl sm4_cfb -sbytes 1 -decrypt -key $KEY -iv $IV -in sm4_cfb8_ciphertext.bin\n"
+"    echo -n abc | gmssl sm4_cfb -sbytes 1 -encrypt -key $KEY -iv $IV -out sm4_cfb8_ciphertext.bin\n"
+"    gmssl sm4_cfb -sbytes 1 -decrypt -key $KEY -iv $IV -in sm4_cfb8_ciphertext.bin\n"
 "\n"
-"  echo -n 01234567 | gmssl sm4_cfb -sbytes 8 -encrypt -key $KEY -iv $IV -out sm4_cfb64_ciphertext.bin\n"
-"  gmssl sm4_cfb -sbytes 8 -decrypt -key $KEY -iv $IV -in sm4_cfb64_ciphertext.bin\n"
+"    echo -n 01234567 | gmssl sm4_cfb -sbytes 8 -encrypt -key $KEY -iv $IV -out sm4_cfb64_ciphertext.bin\n"
+"    gmssl sm4_cfb -sbytes 8 -decrypt -key $KEY -iv $IV -in sm4_cfb64_ciphertext.bin\n"
 "\n";
 
 int sm4_cfb_main(int argc, char **argv)
diff --git a/tools/sm4_ctr.c b/tools/sm4_ctr.c
index e3adb6ac..ff7b0373 100755
--- a/tools/sm4_ctr.c
+++ b/tools/sm4_ctr.c
@@ -33,10 +33,10 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"  KEY=`gmssl rand -outlen 16 -hex`\n"
-"  IV=`gmssl rand -outlen 16 -hex`\n"
-"  echo -n abc | gmssl sm4_ctr -encrypt -key $KEY -iv $IV -out sm4_ctr_ciphertext.bin\n"
-"  gmssl sm4_ctr -decrypt -key $KEY -iv $IV -in sm4_ctr_ciphertext.bin\n"
+"    KEY=`gmssl rand -outlen 16 -hex`\n"
+"    IV=`gmssl rand -outlen 16 -hex`\n"
+"    echo -n abc | gmssl sm4_ctr -encrypt -key $KEY -iv $IV -out sm4_ctr_ciphertext.bin\n"
+"    gmssl sm4_ctr -decrypt -key $KEY -iv $IV -in sm4_ctr_ciphertext.bin\n"
 "\n";
 
 int sm4_ctr_main(int argc, char **argv)
diff --git a/tools/sm4_ecb.c b/tools/sm4_ecb.c
index 26186f99..f78fba19 100755
--- a/tools/sm4_ecb.c
+++ b/tools/sm4_ecb.c
@@ -32,9 +32,9 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"  KEY=`gmssl rand -outlen 16 -hex`\n"
-"  echo -n 0123456789abcdef | gmssl sm4_ecb -encrypt -key $KEY -out sm4_ecb_ciphertext.bin\n"
-"  gmssl sm4_ecb -decrypt -key $KEY -in sm4_ecb_ciphertext.bin\n"
+"    KEY=`gmssl rand -outlen 16 -hex`\n"
+"    echo -n 0123456789abcdef | gmssl sm4_ecb -encrypt -key $KEY -out sm4_ecb_ciphertext.bin\n"
+"    gmssl sm4_ecb -decrypt -key $KEY -in sm4_ecb_ciphertext.bin\n"
 "\n";
 
 int sm4_ecb_main(int argc, char **argv)
diff --git a/tools/sm4_ff1.c b/tools/sm4_ff1.c
index 183f883f..8481e603 100644
--- a/tools/sm4_ff1.c
+++ b/tools/sm4_ff1.c
@@ -40,9 +40,9 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"  KEY=`gmssl rand -outlen 16 -hex`\n"
-"  CIPHERTEXT=`gmssl sm4_ff1 -encrypt -key $KEY -digits 0123456789012345`\n"
-"  gmssl sm4_ff1 -decrypt -key $KEY -digits $CIPHERTEXT\n"
+"    KEY=`gmssl rand -outlen 16 -hex`\n"
+"    CIPHERTEXT=`gmssl sm4_ff1 -encrypt -key $KEY -digits 0123456789012345`\n"
+"    gmssl sm4_ff1 -decrypt -key $KEY -digits $CIPHERTEXT\n"
 "\n";
 
 static uint8_t *read_content(FILE *infp, size_t *outlen, const char *prog)
diff --git a/tools/sm4_gcm.c b/tools/sm4_gcm.c
index 143c9364..159c4af4 100755
--- a/tools/sm4_gcm.c
+++ b/tools/sm4_gcm.c
@@ -37,10 +37,10 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"  KEY=`gmssl rand -outlen 16 -hex`\n"
-"  IV=`gmssl rand -outlen 12 -hex`\n"
-"  echo -n abc | gmssl sm4_gcm -encrypt -key $KEY -iv $IV -aad_hex 001122 -out sm4_gcm_ciphertext.bin\n"
-"  gmssl sm4_gcm -decrypt -key $KEY -iv $IV -aad_hex 001122 -in sm4_gcm_ciphertext.bin\n"
+"    KEY=`gmssl rand -outlen 16 -hex`\n"
+"    IV=`gmssl rand -outlen 12 -hex`\n"
+"    echo -n abc | gmssl sm4_gcm -encrypt -key $KEY -iv $IV -aad_hex 001122 -out sm4_gcm_ciphertext.bin\n"
+"    gmssl sm4_gcm -decrypt -key $KEY -iv $IV -aad_hex 001122 -in sm4_gcm_ciphertext.bin\n"
 "\n";
 
 int sm4_gcm_main(int argc, char **argv)
diff --git a/tools/sm4_ofb.c b/tools/sm4_ofb.c
index c84e9dcf..4b374bee 100755
--- a/tools/sm4_ofb.c
+++ b/tools/sm4_ofb.c
@@ -33,10 +33,10 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"  KEY=`gmssl rand -outlen 16 -hex`\n"
-"  IV=`gmssl rand -outlen 16 -hex`\n"
-"  echo -n abc | gmssl sm4_ofb -encrypt -key $KEY -iv $IV -out sm4_ofb_ciphertext.bin\n"
-"  gmssl sm4_ofb -decrypt -key $KEY -iv $IV -in sm4_ofb_ciphertext.bin\n"
+"    KEY=`gmssl rand -outlen 16 -hex`\n"
+"    IV=`gmssl rand -outlen 16 -hex`\n"
+"    echo -n abc | gmssl sm4_ofb -encrypt -key $KEY -iv $IV -out sm4_ofb_ciphertext.bin\n"
+"    gmssl sm4_ofb -decrypt -key $KEY -iv $IV -in sm4_ofb_ciphertext.bin\n"
 "\n";
 
 int sm4_ofb_main(int argc, char **argv)
diff --git a/tools/sm4_xts.c b/tools/sm4_xts.c
index 565afd93..b4d6625e 100755
--- a/tools/sm4_xts.c
+++ b/tools/sm4_xts.c
@@ -35,11 +35,11 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"  KEY=`gmssl rand -outlen 32 -hex`\n"
-"  IV=`gmssl rand -outlen 16 -hex`\n"
-"  gmssl rand -outlen 512 -out sm4_xts_plaintext.bin\n"
-"  gmssl sm4_xts -encrypt -key $KEY -iv $IV -data_unit_size 512 -in sm4_xts_plaintext.bin -out sm4_xts_ciphertext.bin\n"
-"  gmssl sm4_xts -decrypt -key $KEY -iv $IV -data_unit_size 512 -in sm4_xts_ciphertext.bin -out sm4_xts_decrypted.bin\n"
+"    KEY=`gmssl rand -outlen 32 -hex`\n"
+"    IV=`gmssl rand -outlen 16 -hex`\n"
+"    gmssl rand -outlen 512 -out sm4_xts_plaintext.bin\n"
+"    gmssl sm4_xts -encrypt -key $KEY -iv $IV -data_unit_size 512 -in sm4_xts_plaintext.bin -out sm4_xts_ciphertext.bin\n"
+"    gmssl sm4_xts -decrypt -key $KEY -iv $IV -data_unit_size 512 -in sm4_xts_ciphertext.bin -out sm4_xts_decrypted.bin\n"
 "\n";
 
 int sm4_xts_main(int argc, char **argv)
diff --git a/tools/sm9decrypt.c b/tools/sm9decrypt.c
index efe58c5c..69d54c87 100644
--- a/tools/sm9decrypt.c
+++ b/tools/sm9decrypt.c
@@ -30,11 +30,11 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"    $ gmssl sm9setup -alg sm9encrypt -pass P@ssw0rd -out sm9enc_msk.pem -pubout sm9enc_mpk.pem\n"
-"    $ gmssl sm9keygen -alg sm9encrypt -in sm9enc_msk.pem -inpass P@ssw0rd -id Alice -out sm9enc.pem -outpass 123456\n"
+"    gmssl sm9setup -alg sm9encrypt -pass P@ssw0rd -out sm9enc_msk.pem -pubout sm9enc_mpk.pem\n"
+"    gmssl sm9keygen -alg sm9encrypt -in sm9enc_msk.pem -inpass P@ssw0rd -id Alice -out sm9enc.pem -outpass 123456\n"
 "\n"
-"    $ echo 'Secret text' | gmssl sm9encrypt -pubmaster sm9enc_mpk.pem -id Alice -out sm9_ciphertext.der\n"
-"    $ gmssl sm9decrypt -key sm9enc.pem -pass 123456 -id Alice -in sm9_ciphertext.der\n"
+"    echo 'Secret text' | gmssl sm9encrypt -pubmaster sm9enc_mpk.pem -id Alice -out sm9_ciphertext.der\n"
+"    gmssl sm9decrypt -key sm9enc.pem -pass 123456 -id Alice -in sm9_ciphertext.der\n"
 "\n";
 
 int sm9decrypt_main(int argc, char **argv)
diff --git a/tools/sm9encrypt.c b/tools/sm9encrypt.c
index 80460f3f..d0d9fea2 100644
--- a/tools/sm9encrypt.c
+++ b/tools/sm9encrypt.c
@@ -27,11 +27,11 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"    $ gmssl sm9setup -alg sm9encrypt -pass P@ssw0rd -out sm9enc_msk.pem -pubout sm9enc_mpk.pem\n"
-"    $ gmssl sm9keygen -alg sm9encrypt -in sm9enc_msk.pem -inpass P@ssw0rd -id Alice -out sm9enc.pem -outpass 123456\n"
+"    gmssl sm9setup -alg sm9encrypt -pass P@ssw0rd -out sm9enc_msk.pem -pubout sm9enc_mpk.pem\n"
+"    gmssl sm9keygen -alg sm9encrypt -in sm9enc_msk.pem -inpass P@ssw0rd -id Alice -out sm9enc.pem -outpass 123456\n"
 "\n"
-"    $ echo 'Secret text' | gmssl sm9encrypt -pubmaster sm9enc_mpk.pem -id Alice -out sm9_ciphertext.der\n"
-"    $ gmssl sm9decrypt -key sm9enc.pem -pass 123456 -id Alice -in sm9_ciphertext.der\n"
+"    echo 'Secret text' | gmssl sm9encrypt -pubmaster sm9enc_mpk.pem -id Alice -out sm9_ciphertext.der\n"
+"    gmssl sm9decrypt -key sm9enc.pem -pass 123456 -id Alice -in sm9_ciphertext.der\n"
 "\n";
 
 int sm9encrypt_main(int argc, char **argv)
diff --git a/tools/sm9keygen.c b/tools/sm9keygen.c
index c9a652a5..792305f5 100644
--- a/tools/sm9keygen.c
+++ b/tools/sm9keygen.c
@@ -33,12 +33,12 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"    $ gmssl sm9setup -alg sm9sign -pass P@ssw0rd -out sm9sign_msk.pem\n"
-"    $ gmssl sm9keygen -alg sm9sign -in sm9sign_msk.pem -inpass P@ssw0rd -id Alice -out sm9sign.pem -outpass 123456\n"
+"    gmssl sm9setup -alg sm9sign -pass P@ssw0rd -out sm9sign_msk.pem\n"
+"    gmssl sm9keygen -alg sm9sign -in sm9sign_msk.pem -inpass P@ssw0rd -id Alice -out sm9sign.pem -outpass 123456\n"
 "\n"
-"    $ gmssl sm9setup -alg sm9encrypt -pass P@ssw0rd -out sm9enc_msk.pem\n"
-"    $ gmssl sm9keygen -alg sm9encrypt -in sm9enc_msk.pem -inpass P@ssw0rd -id Alice -out sm9enc.pem -outpass 123456\n"
-"    $ gmssl sm9keygen -alg sm9keyagreement -in sm9enc_msk.pem -inpass P@ssw0rd -id Alice -out sm9exch.pem -outpass 123456\n"
+"    gmssl sm9setup -alg sm9encrypt -pass P@ssw0rd -out sm9enc_msk.pem\n"
+"    gmssl sm9keygen -alg sm9encrypt -in sm9enc_msk.pem -inpass P@ssw0rd -id Alice -out sm9enc.pem -outpass 123456\n"
+"    gmssl sm9keygen -alg sm9keyagreement -in sm9enc_msk.pem -inpass P@ssw0rd -id Alice -out sm9exch.pem -outpass 123456\n"
 "\n";
 
 int sm9keygen_main(int argc, char **argv)
diff --git a/tools/sm9setup.c b/tools/sm9setup.c
index b177fb4b..f449b24b 100644
--- a/tools/sm9setup.c
+++ b/tools/sm9setup.c
@@ -30,8 +30,8 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"    $ gmssl sm9setup -alg sm9sign -pass P@ssw0rd -out sm9sign_msk.pem -pubout sm9sign_mpk.pem\n"
-"    $ gmssl sm9setup -alg sm9encrypt -pass P@ssw0rd -out sm9enc_msk.pem -pubout sm9enc_mpk.pem\n"
+"    gmssl sm9setup -alg sm9sign -pass P@ssw0rd -out sm9sign_msk.pem -pubout sm9sign_mpk.pem\n"
+"    gmssl sm9setup -alg sm9encrypt -pass P@ssw0rd -out sm9enc_msk.pem -pubout sm9enc_mpk.pem\n"
 "\n";
 
 int sm9setup_main(int argc, char **argv)
diff --git a/tools/sm9sign.c b/tools/sm9sign.c
index 7f935540..fbd08659 100644
--- a/tools/sm9sign.c
+++ b/tools/sm9sign.c
@@ -29,11 +29,11 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"    $ gmssl sm9setup -alg sm9sign -pass P@ssw0rd -out sm9sign_msk.pem -pubout sm9sign_mpk.pem\n"
-"    $ gmssl sm9keygen -alg sm9sign -in sm9sign_msk.pem -inpass P@ssw0rd -id Alice -out sm9sign.pem -outpass 123456\n"
+"    gmssl sm9setup -alg sm9sign -pass P@ssw0rd -out sm9sign_msk.pem -pubout sm9sign_mpk.pem\n"
+"    gmssl sm9keygen -alg sm9sign -in sm9sign_msk.pem -inpass P@ssw0rd -id Alice -out sm9sign.pem -outpass 123456\n"
 "\n"
-"    $ echo -n 'message to be signed' | gmssl sm9sign -key sm9sign.pem -pass 123456 -out sm9.sig\n"
-"    $ echo -n 'message to be signed' | gmssl sm9verify -pubmaster sm9sign_mpk.pem -id Alice -sig sm9.sig\n"
+"    echo -n 'message to be signed' | gmssl sm9sign -key sm9sign.pem -pass 123456 -out sm9.sig\n"
+"    echo -n 'message to be signed' | gmssl sm9verify -pubmaster sm9sign_mpk.pem -id Alice -sig sm9.sig\n"
 "\n";
 
 int sm9sign_main(int argc, char **argv)
diff --git a/tools/sm9verify.c b/tools/sm9verify.c
index cafc38ea..087ed185 100644
--- a/tools/sm9verify.c
+++ b/tools/sm9verify.c
@@ -27,11 +27,11 @@ static const char *options =
 "\n"
 "Examples\n"
 "\n"
-"    $ gmssl sm9setup -alg sm9sign -pass P@ssw0rd -out sm9sign_msk.pem -pubout sm9sign_mpk.pem\n"
-"    $ gmssl sm9keygen -alg sm9sign -in sm9sign_msk.pem -inpass P@ssw0rd -id Alice -out sm9sign.pem -outpass 123456\n"
+"    gmssl sm9setup -alg sm9sign -pass P@ssw0rd -out sm9sign_msk.pem -pubout sm9sign_mpk.pem\n"
+"    gmssl sm9keygen -alg sm9sign -in sm9sign_msk.pem -inpass P@ssw0rd -id Alice -out sm9sign.pem -outpass 123456\n"
 "\n"
-"    $ echo -n 'message to be signed' | gmssl sm9sign -key sm9sign.pem -pass 123456 -out sm9.sig\n"
-"    $ echo -n 'message to be signed' | gmssl sm9verify -pubmaster sm9sign_mpk.pem -id Alice -sig sm9.sig\n"
+"    echo -n 'message to be signed' | gmssl sm9sign -key sm9sign.pem -pass 123456 -out sm9.sig\n"
+"    echo -n 'message to be signed' | gmssl sm9verify -pubmaster sm9sign_mpk.pem -id Alice -sig sm9.sig\n"
 "\n";
 
 int sm9verify_main(int argc, char **argv)
diff --git a/tools/tlcp_help.h b/tools/tlcp_help.h
index 17ffed6f..26ab8f10 100644
--- a/tools/tlcp_help.h
+++ b/tools/tlcp_help.h
@@ -9,10 +9,10 @@
 
 "\n"
 "Supported cipher suites:\n"
-"      TLS_ECC_SM4_CBC_SM3\n"
-"      TLS_ECC_SM4_GCM_SM3\n"
-"      TLS_ECDHE_SM4_CBC_SM3\n"
-"      TLS_ECDHE_SM4_GCM_SM3\n"
+"    TLS_ECC_SM4_CBC_SM3\n"
+"    TLS_ECC_SM4_GCM_SM3\n"
+"    TLS_ECDHE_SM4_CBC_SM3\n"
+"    TLS_ECDHE_SM4_GCM_SM3\n"
 "\n"
 "\n"
 "Examples\n"
diff --git a/tools/tls12_help.h b/tools/tls12_help.h
index dd660680..5d58a579 100644
--- a/tools/tls12_help.h
+++ b/tools/tls12_help.h
@@ -9,13 +9,13 @@
 
 "\n"
 "Supported cipher suites:\n"
-"      TLS_ECDHE_SM4_CBC_SM3\n"
-"      TLS_ECDHE_SM4_GCM_SM3\n"
+"    TLS_ECDHE_SM4_CBC_SM3\n"
+"    TLS_ECDHE_SM4_GCM_SM3\n"
 #if defined(ENABLE_AES) && defined(ENABLE_SHA2) && defined(ENABLE_SECP256R1)
-"      TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256\n"
-"      TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256\n"
+"    TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256\n"
+"    TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256\n"
 #ifdef ENABLE_AES_CCM
-"      TLS_ECDHE_ECDSA_WITH_AES_128_CCM\n"
+"    TLS_ECDHE_ECDSA_WITH_AES_128_CCM\n"
 #endif
 #endif
 "\n"
diff --git a/tools/tls13_help.h b/tools/tls13_help.h
index fd46d6de..18f3c1b2 100644
--- a/tools/tls13_help.h
+++ b/tools/tls13_help.h
@@ -1,13 +1,13 @@
 "\n"
 "Supported cipher suites:\n"
-"      TLS_SM4_GCM_SM3\n"
+"    TLS_SM4_GCM_SM3\n"
 #ifdef ENABLE_SM4_CCM
-"      TLS_SM4_CCM_SM3\n"
+"    TLS_SM4_CCM_SM3\n"
 #endif
 #if defined(ENABLE_AES) && defined(ENABLE_SHA2)
-"      TLS_AES_128_GCM_SHA256\n"
+"    TLS_AES_128_GCM_SHA256\n"
 #ifdef ENABLE_AES_CCM
-"      TLS_AES_128_CCM_SHA256\n"
+"    TLS_AES_128_CCM_SHA256\n"
 #endif
 #endif
 "\n"