[sysvinit-devel] add quiet option for pidof

[Walter Harms]

Hi List,
i am a happy user of pidof and i am using it in scripts often
to check for a programm running like.

pidof programm >/dev/null || nohup programm &

i am always missing the -q what is common to other programm to
silence unwanted output. see below for a patch that add the -q
option. btw: pidof supports also -h but has no check and no usage.

hope that helps
re,
 wh

--- killall5.c  2018-06-19 01:25:26.000000000 +0200
+++ killall5.c.new      2018-08-27 15:43:56.000000000 +0200
@@ -943,6 +943,7 @@
 #define PIDOF_SINGLE   0x01
 #define PIDOF_OMIT     0x02
 #define PIDOF_NETFS    0x04
+#define PIDOF_QUIET    0x08
 
 /*
  *     Pidof functionality.
@@ -966,7 +967,7 @@
        if ((token = getenv("PIDOF_NETFS")) && (strcmp(token,"no") != 0))
                flags |= PIDOF_NETFS;
 
-       while ((opt = getopt(argc,argv,"hco:sxn")) != EOF) switch (opt) {
+       while ((opt = getopt(argc,argv,"qhco:sxn")) != EOF) switch (opt) {
                case '?':
                        nsyslog(LOG_ERR,"invalid options on command line!\n");
                        closelog();
@@ -1008,6 +1009,9 @@
                case 'n':
                        flags |= PIDOF_NETFS;
                        break;
+               case 'q':
+                       flags |= PIDOF_QUIET;
+                       break;
                default:
                        /* Nothing */
                        break;
@@ -1065,15 +1069,17 @@
                                                continue;
                                        }
                                }
-                               if (!first)
-                                       printf(" ");
-                               printf("%d", p->pid);
+                               if ( ~flags & PIDOF_QUIET) {
+                                       if (!first)
+                                               printf(" ");
+                                       printf("%d", p->pid);
+                               }
                                first = 0;
                        }
                }
        }
        if (!first)
-               printf("\n");
+               if ( ~flags & PIDOF_QUIET) printf("\n");
 
        clear_mnt();