utils-std

commit: 49fc0e9fd47588e9922a91e8938977fafa0a3437
parent 66509f6d38509d3551adaed282e61bea00e5a7f9
Author: Haelwenn (lanodan) Monnier <contact@hacktivis.me>
Date:   Sat, 10 Jan 2026 16:08:26 +0100

cmd/sha*sum: add -q option

Could use grep(1) in most cases but makes it rather complex when
part of conditions.

For example:

    if sha256sum -c foobar | grep -v ': OK$'; then
    	# based on grep's return code rather than sha256sum's
    fi

Diffstat:
M
cmd/sha1sum.1
4
+++-
M
cmd/sha1sum.c
8
++++++--
M
cmd/sha256sum.1
4
+++-
M
cmd/sha256sum.c
8
++++++--
M
cmd/sha512sum.1
4
+++-
M
cmd/sha512sum.c
8
++++++--

6 files changed, 27 insertions(+), 9 deletions(-)
diff --git a/cmd/sha1sum.1 b/cmd/sha1sum.1
@@ -9,7 +9,7 @@
 .Nd write and verify sha1 checksums
 .Sh SYNOPSIS
 .Nm
-.Op Fl c
+.Op Fl cq
 .Op Ar file...
 .Sh DESCRIPTION
 .Nm
@@ -25,6 +25,8 @@ Verify checksums contained in each
 Currently supported format being checksum, whitespace, an optional asterisk
 .Ql *
 and finally a filename.
+.It Fl q
+Quiet, do not print 'OK'
 .El
 .Sh EXIT STATUS
 .Ex -std
diff --git a/cmd/sha1sum.c b/cmd/sha1sum.c
@@ -20,6 +20,7 @@
 #define SHA1SUM_LEN SHA1_DIGEST_LENGTH * 2 + 1
 
 const char *argv0 = "sha1sum";
+bool quiet = false;
 
 static int
 sha1sum(int fd, const char *fdname, char sum[SHA1SUM_LEN])
@@ -146,7 +147,7 @@ check(FILE *file, const char *filename)
 		if(sha1sum(fd, target, got) < 0) err = 1;
 		if(memcmp(line, got, SHA1SUM_LEN) == 0)
 		{
-			printf("%s: OK\n", target);
+			if(!quiet) printf("%s: OK\n", target);
 		}
 		else
 		{
@@ -182,13 +183,16 @@ main(int argc, char *argv[])
 {
 	bool opt_c = false;
 
-	for(int c = -1; (c = getopt_nolong(argc, argv, ":c")) != -1;)
+	for(int c = -1; (c = getopt_nolong(argc, argv, ":cq")) != -1;)
 	{
 		switch(c)
 		{
 		case 'c':
 			opt_c = true;
 			break;
+		case 'q':
+			quiet = true;
+			break;
 		case ':':
 			fprintf(stderr, "%s: error: Missing operand for option: '-%c'\n", argv0, optopt);
 			return 1;
diff --git a/cmd/sha256sum.1 b/cmd/sha256sum.1
@@ -9,7 +9,7 @@
 .Nd write and verify sha256 checksums
 .Sh SYNOPSIS
 .Nm
-.Op Fl c
+.Op Fl cq
 .Op Ar file...
 .Sh DESCRIPTION
 .Nm
@@ -25,6 +25,8 @@ Verify checksums contained in each
 Currently supported format being checksum, whitespace, an optional asterisk
 .Ql *
 and finally a filename.
+.It Fl q
+Quiet, do not print 'OK'
 .El
 .Sh EXIT STATUS
 .Ex -std
diff --git a/cmd/sha256sum.c b/cmd/sha256sum.c
@@ -20,6 +20,7 @@
 #define SHA256SUM_LEN SHA256_DIGEST_LENGTH * 2 + 1
 
 const char *argv0 = "sha256sum";
+bool quiet = false;
 
 static int
 sha256sum(int fd, const char *fdname, char sum[SHA256SUM_LEN])
@@ -146,7 +147,7 @@ check(FILE *file, const char *filename)
 		if(sha256sum(fd, target, got) < 0) err = 1;
 		if(memcmp(line, got, SHA256SUM_LEN) == 0)
 		{
-			printf("%s: OK\n", target);
+			if(!quiet) printf("%s: OK\n", target);
 		}
 		else
 		{
@@ -182,13 +183,16 @@ main(int argc, char *argv[])
 {
 	bool opt_c = false;
 
-	for(int c = -1; (c = getopt_nolong(argc, argv, ":c")) != -1;)
+	for(int c = -1; (c = getopt_nolong(argc, argv, ":cq")) != -1;)
 	{
 		switch(c)
 		{
 		case 'c':
 			opt_c = true;
 			break;
+		case 'q':
+			quiet = true;
+			break;
 		case ':':
 			fprintf(stderr, "%s: error: Missing operand for option: '-%c'\n", argv0, optopt);
 			return 1;
diff --git a/cmd/sha512sum.1 b/cmd/sha512sum.1
@@ -9,7 +9,7 @@
 .Nd write and verify sha512 checksums
 .Sh SYNOPSIS
 .Nm
-.Op Fl c
+.Op Fl cq
 .Op Ar file...
 .Sh DESCRIPTION
 .Nm
@@ -25,6 +25,8 @@ Verify checksums contained in each
 Currently supported format being checksum, whitespace, an optional asterisk
 .Ql *
 and finally a filename.
+.It Fl q
+Quiet, do not print 'OK'
 .El
 .Sh EXIT STATUS
 .Ex -std
diff --git a/cmd/sha512sum.c b/cmd/sha512sum.c
@@ -20,6 +20,7 @@
 #define SHA512SUM_LEN SHA512_DIGEST_LENGTH * 2 + 1
 
 const char *argv0 = "sha512sum";
+bool quiet = false;
 
 static int
 sha512sum(int fd, const char *fdname, char sum[SHA512SUM_LEN])
@@ -146,7 +147,7 @@ check(FILE *file, const char *filename)
 		if(sha512sum(fd, target, got) < 0) err = 1;
 		if(memcmp(line, got, SHA512SUM_LEN) == 0)
 		{
-			printf("%s: OK\n", target);
+			if(!quiet) printf("%s: OK\n", target);
 		}
 		else
 		{
@@ -182,13 +183,16 @@ main(int argc, char *argv[])
 {
 	bool opt_c = false;
 
-	for(int c = -1; (c = getopt_nolong(argc, argv, ":c")) != -1;)
+	for(int c = -1; (c = getopt_nolong(argc, argv, ":cq")) != -1;)
 	{
 		switch(c)
 		{
 		case 'c':
 			opt_c = true;
 			break;
+		case 'q':
+			quiet = true;
+			break;
 		case ':':
 			fprintf(stderr, "%s: error: Missing operand for option: '-%c'\n", argv0, optopt);
 			return 1;