[src/trunk]: src/usr.bin/pkill Add a -q option for pgrep to not print anythin...

[simonb <simonb%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/91af1f7910ee
branches:  trunk
changeset: 372158:91af1f7910ee
user:      simonb <simonb%NetBSD.org@localhost>
date:      Sat Oct 29 08:17:16 2022 +0000

description:
Add a -q option for pgrep to not print anything; similar to grep -q.

diffstat:

 usr.bin/pkill/pkill.1 |  13 ++++++++++---
 usr.bin/pkill/pkill.c |  17 +++++++++++++----
 2 files changed, 23 insertions(+), 7 deletions(-)

diffs (107 lines):

diff -r 42b8bc04fe5b -r 91af1f7910ee usr.bin/pkill/pkill.1
--- a/usr.bin/pkill/pkill.1     Sat Oct 29 07:32:54 2022 +0000
+++ b/usr.bin/pkill/pkill.1     Sat Oct 29 08:17:16 2022 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: pkill.1,v 1.31 2022/01/01 08:34:35 msaitoh Exp $
+.\"    $NetBSD: pkill.1,v 1.32 2022/10/29 08:17:16 simonb Exp $
 .\"
 .\" Copyright (c) 2002 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -27,7 +27,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd December 3, 2018
+.Dd October 29, 2022
 .Dt PKILL 1
 .Os
 .Sh NAME
@@ -37,7 +37,7 @@
 .Nd find or signal processes by name
 .Sh SYNOPSIS
 .Nm pgrep
-.Op Fl filnvx
+.Op Fl filnqvx
 .Op Fl d Ar delim
 .Op Fl G Ar gid
 .Op Fl g Ar pgrp
@@ -179,6 +179,13 @@
 .Nm pkill .
 .El
 .Pp
+The following option is also available for
+.Nm pgrep :
+.Bl -tag -width xxxxxxxx
+.It Fl q
+Quiet; do not write anything to standard output.
+.El
+.Pp
 The
 .Fl l
 flag is also available for
diff -r 42b8bc04fe5b -r 91af1f7910ee usr.bin/pkill/pkill.c
--- a/usr.bin/pkill/pkill.c     Sat Oct 29 07:32:54 2022 +0000
+++ b/usr.bin/pkill/pkill.c     Sat Oct 29 08:17:16 2022 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pkill.c,v 1.32 2022/07/02 20:50:26 ad Exp $    */
+/*     $NetBSD: pkill.c,v 1.33 2022/10/29 08:17:16 simonb Exp $        */
 
 /*-
  * Copyright (c) 2002, 2022 The NetBSD Foundation, Inc.
@@ -31,7 +31,7 @@
 
 #include <sys/cdefs.h>
 #ifndef lint
-__RCSID("$NetBSD: pkill.c,v 1.32 2022/07/02 20:50:26 ad Exp $");
+__RCSID("$NetBSD: pkill.c,v 1.33 2022/10/29 08:17:16 simonb Exp $");
 #endif /* !lint */
 
 #include <sys/types.h>
@@ -87,6 +87,7 @@
 static int     signum = SIGTERM;
 static int     nicenum;
 static int     newest;
+static int     quiet;
 static int     inverse;
 static int     longfmt;
 static int     matchargs;
@@ -181,7 +182,7 @@
                } else
                        usage();
        } else {
-               while ((ch = getopt(argc, argv, "G:P:U:d:fg:ilns:t:u:vx")) != -1)
+               while ((ch = getopt(argc, argv, "G:P:U:d:fg:ilnqs:t:u:vx")) != -1)
                        switch (ch) {
                        case 'G':
                                makelist(&rgidlist, LT_GROUP, optarg);
@@ -217,6 +218,11 @@
                                newest = 1;
                                criteria = 1;
                                break;
+                       case 'q':
+                               if (!pgrep)
+                                       usage();
+                               quiet = 1;
+                               break;
                        case 's':
                                makelist(&sidlist, LT_SID, optarg);
                                criteria = 1;
@@ -443,7 +449,7 @@
                    getprogname());
        else {
                if (pgrep)
-                       ustr = "[-filnvx] [-d delim]";
+                       ustr = "[-filnqvx] [-d delim]";
                else
                        ustr = "[-signal] [-filnvx]";
 
@@ -514,6 +520,9 @@
 {
        char **argv;
 
+       if (quiet)
+               return 1;
+
        if (longfmt && matchargs) {
 
                /*