The synopsis for -c is dreadfully confusing. it's a mode, not an option. as such, all the other stuff isn't available.
Index: md5.1 =================================================================== RCS file: /cvs/src/bin/md5/md5.1,v retrieving revision 1.36 diff -u -p -r1.36 md5.1 --- md5.1 8 Jan 2014 16:12:44 -0000 1.36 +++ md5.1 10 Jan 2014 05:08:51 -0000 @@ -26,11 +26,13 @@ .Nd calculate a message digest (checksum) for a file .Sh SYNOPSIS .Nm md5 -.Op Fl bpqrtx -.Op Fl c Op Ar checklist ... +.Op Fl bprtx .Op Fl h Ar hashfile .Op Fl s Ar string .Op Ar +.Nm md5 +.Op Fl q +.Fl c Op Ar checklist ... .Sh DESCRIPTION .Nm takes as input a message of arbitrary length and produces Index: md5.c =================================================================== RCS file: /cvs/src/bin/md5/md5.c,v retrieving revision 1.64 diff -u -p -r1.64 md5.c --- md5.c 8 Jan 2014 16:23:21 -0000 1.64 +++ md5.c 10 Jan 2014 05:12:01 -0000 @@ -820,8 +820,10 @@ usage(void) __progname, (int)strlen(__progname), ""); else #endif /* !defined(SMALL) */ - fprintf(stderr, "usage: %s [-bpqrtx] [-c [checklist ...]] " - "[-h hashfile] [-s string] [file ...]\n", __progname); + fprintf(stderr, "usage:" + "\t%s [-bprtx] [-h hashfile] [-s string] [file ...]\n" + "\t%s [-q] -c [checklist ...]\n", + __progname, __progname); exit(EXIT_FAILURE); } Index: sha1.1 =================================================================== RCS file: /cvs/src/bin/md5/sha1.1,v retrieving revision 1.34 diff -u -p -r1.34 sha1.1 --- sha1.1 8 Jan 2014 16:12:44 -0000 1.34 +++ sha1.1 10 Jan 2014 05:09:06 -0000 @@ -26,11 +26,13 @@ .Nd calculate a message digest (checksum) for a file .Sh SYNOPSIS .Nm sha1 -.Op Fl bpqrtx -.Op Fl c Op Ar checklist ... +.Op Fl bprtx .Op Fl h Ar hashfile .Op Fl s Ar string .Op Ar +.Nm sha1 +.Op Fl q +.Fl c Op Ar checklist ... .Sh DESCRIPTION .Nm takes as input a message of arbitrary length and produces Index: sha256.1 =================================================================== RCS file: /cvs/src/bin/md5/sha256.1,v retrieving revision 1.9 diff -u -p -r1.9 sha256.1 --- sha256.1 8 Jan 2014 16:12:44 -0000 1.9 +++ sha256.1 10 Jan 2014 05:09:47 -0000 @@ -27,17 +27,21 @@ .Nd calculate a message digest (checksum) for a file .Sh SYNOPSIS .Nm sha256 -.Op Fl bpqrtx -.Op Fl c Op Ar checklist ... +.Op Fl bprtx .Op Fl h Ar hashfile .Op Fl s Ar string .Op Ar +.Nm sha256 +.Op Fl q +.Fl c Op Ar checklist ... .Nm sha512 -.Op Fl bpqrtx -.Op Fl c Op Ar checklist ... +.Op Fl bprtx .Op Fl h Ar hashfile .Op Fl s Ar string .Op Ar +.Nm sha512 +.Op Fl q +.Fl c Op Ar checklist ... .Sh DESCRIPTION .Nm takes as input a message of arbitrary length and produces