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commit 5f06185b1b187993248b737c29dff9ded3996fa9
parent 5836ef72e3f899fe8ceaccb89116f869484c3e28
Author: sin <>
Date:   Wed, 11 Feb 2015 12:12:21 +0000

uniq: Fixup program usage and manpage

Remove -i as it is not required by POSIX.  We'll add it if we
hit scripts that require it.

Muniq.1 | 29++++++++++++-----------------
Muniq.c | 4+---
3 files changed, 14 insertions(+), 21 deletions(-)

diff --git a/README b/README @@ -79,7 +79,7 @@ The following tools are implemented ('*' == finished, '#' == UTF-8 support, =* tty yes none =* uname yes none #* unexpand yes none -= uniq no none += uniq no [infile [outfile]] =* unlink yes none = uudecode no -o = uuencode no -m diff --git a/uniq.1 b/uniq.1 @@ -6,7 +6,10 @@ .Nd report or filter out repeated lines in a file .Sh SYNOPSIS .Nm -.Op Fl cdu +.Op Fl c +.Op Fl d | u +.Op Fl f Ar fields +.Op Fl s Ar chars .Op Ar file .Sh DESCRIPTION .Nm @@ -26,20 +29,12 @@ Prefixes each line with a count of its consecutive occurrences in the input. Suppresses non-duplicate lines (thus 'uniq -d' prints only duplicates). .It Fl u Suppresses non-unique lines (thus 'uniq -u' prints only uniques). +.It Fl f Ar fields +Ignore the first +.Ar fields +in each input line when doing comparisons. +.It Fl s Ar chars +Ignore the first +.Ar chars +characters in each input line when doing comparisons. .El -.Sh BUGS -The original sbase implementation of -.Nm -supported multiple input-file arguments as e.g. -.Xr cat 1 -and -.Xr grep 1 -do. -Unfortunately, POSIX uniq treats its second argument (if present) as an -output filename and clobbers it. Since users and scripts which rely on -.Nm -supporting multiple input-file arguments would be at risk of data loss -if they ever ran into a POSIX-compatible -.Nm -, support for multiple input-file arguments was removed from this -implementation. diff --git a/uniq.c b/uniq.c @@ -25,7 +25,7 @@ static long prevlinecount = 0; static void usage(void) { - eprintf("usage: %s [-cdiu] [input]]\n", argv0); + eprintf("usage: %s [-cdufs] [file]\n", argv0); } int @@ -34,8 +34,6 @@ main(int argc, char *argv[]) FILE *fp; ARGBEGIN { - case 'i': - eprintf("not implemented\n"); case 'c': countfmt = "%7ld "; break;