procps/procps-3.2.8-pgrep_coption.dif

--- pgrep.1
+++ pgrep.1	2007-10-05 14:36:42.000000000 +0200
@@ -7,7 +7,7 @@
 pgrep, pkill \- look up or signal processes based on name and other attributes
 
 .SH SYNOPSIS
-pgrep [\-flvx] [\-d \fIdelimiter\fP] [\-n|\-o] [\-P \fIppid\fP,...] [\-g \fIpgrp\fP,...]
+pgrep [\-cflvx] [\-d \fIdelimiter\fP] [\-n|\-o] [\-P \fIppid\fP,...] [\-g \fIpgrp\fP,...]
 .br
 	[\-s \fIsid\fP,...] [\-u \fIeuid\fP,...] [\-U \fIuid\fP,...] [\-G \fIgid\fP,...]
 .br
@@ -38,6 +38,9 @@ to each process instead of listing them
 
 .SH OPTIONS
 .TP
+\-c
+Suppress normal output; instead print a count of matching processes.
+.TP
 \-d \fIdelimiter\fP
 Sets the string used to delimit each process ID in the output (by
 default a newline).  (\fBpgrep\fP only.)
--- pgrep.c
+++ pgrep.c	2009-05-11 12:38:44.945901308 +0200
@@ -54,6 +54,7 @@ static int opt_oldest = 0;
 static int opt_newest = 0;
 static int opt_negate = 0;
 static int opt_exact = 0;
+static int opt_count = 0;
 static int opt_signal = SIGTERM;
 static int opt_lock = 0;
 static int opt_case = 0;
@@ -564,7 +565,7 @@ static void parse_opts (int argc, char *
 		strcat (opts, "ld:");
 	}
 			
-	strcat (opts, "LF:fnovxP:g:s:u:U:G:t:?V");
+	strcat (opts, "LF:cfnovxP:g:s:u:U:G:t:?V");
 	
 	while ((opt = getopt (argc, argv, opts)) != -1) {
 		switch (opt) {
@@ -612,6 +613,9 @@ static void parse_opts (int argc, char *
 			exit(EXIT_SUCCESS);
 //		case 'c':   // Solaris: match by contract ID
 //			break;
+		case 'c':
+			opt_count = 1;
+			break;
 		case 'd':   // Solaris: change the delimiter
 			opt_delim = strdup (optarg);
 			break;
@@ -723,10 +727,14 @@ int main (int argc, char *argv[])
 				 procs[i].num, strerror (errno));
 		}
 	} else {
-		if (opt_long)
-			output_strlist(procs,num);
-		else
-			output_numlist(procs,num);
+		if (opt_count) {
+			fprintf(stdout, "%ld\n", num);
+		} else {
+			if (opt_long)
+				output_strlist (procs,num);
+			else
+				output_numlist (procs,num);
+		}
 	}
 	return !num; // exit(EXIT_SUCCESS) if match, otherwise exit(EXIT_FAILURE)
 }