pidof: Fix separator option

Short separator option used 's' instead of 'S' which
meant it pidof would use the single-shot option when you
meant separator.

Added alias for -S using -d to give some sysvinit pidof
compatibility.

References:
    commit 73492b182dc60c1605d1b0d62de651fad97807af
    procps-ng/procps#141

1 files changed, 3 insertions, 2 deletions

diff --git a/pidof.c b/pidof.c
index c428811..cff9126 100644
--- a/pidof.c
+++ b/pidof.c
@@ -295,13 +295,13 @@ int main (int argc, char **argv)
 	int first_pid = 1;
 
 	const char *separator = " ";
-	const char *opts = "scnxmo:S:?Vh";
+	const char *opts = "scdnxmo:S:?Vh";
 
 	static const struct option longopts[] = {
 		{"check-root", no_argument, NULL, 'c'},
 		{"single-shot", no_argument, NULL, 's'},
 		{"omit-pid", required_argument, NULL, 'o'},
-		{"separator", required_argument, NULL, 's'},
+		{"separator", required_argument, NULL, 'S'},
 		{"help", no_argument, NULL, 'h'},
 		{"version", no_argument, NULL, 'V'},
 		{NULL, 0, NULL, 0}
@@ -334,6 +334,7 @@ int main (int argc, char **argv)
 				pidof_root = pid_link(getpid(), "root");
 			}
 			break;
+		case 'd': /* sysv pidof uses this for S */
 		case 'S':
 			separator = optarg;
 			break;