Add -version option to print version

Change-Id: I9b4703c54ddefb2011f321bf0e159a60f94e2b97
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>

2 files changed, 12 insertions, 1 deletions

diff --git a/man/xkill.man b/man/xkill.man
index 87ddc0d..a283f34 100644
--- a/man/xkill.man
+++ b/man/xkill.man
@@ -27,7 +27,7 @@
 xkill - kill a client by its X resource
 .SH SYNOPSIS
 .B "xkill"
-[\-display \fIdisplayname\fP] [\-id \fIresource\fP] [\-button number] [\-frame] [\-all]
+[\-display \fIdisplayname\fP] [\-id \fIresource\fP] [\-button number] [\-frame] [\-all] [\-version]
 .SH DESCRIPTION
 .PP
 .I Xkill
@@ -66,6 +66,9 @@ This option indicates that xkill should ignore the standard conventions for
 finding top-level client windows (which are typically nested inside a window
 manager window), and simply believe that you want to kill direct children of
 the root.
+.TP 8
+.B \-version
+This option makes xkill print its version and exit without killing anything.
 .SH CAVEATS
 This command does not provide any warranty that the application whose
 connection to the X server is closed will abort nicely, or even abort
diff --git a/xkill.c b/xkill.c
index 5a303b7..a4f5c48 100644
--- a/xkill.c
+++ b/xkill.c
@@ -35,6 +35,10 @@ from The Open Group.
  * Warning, this is a very dangerous client....
  */
 
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <ctype.h>
@@ -78,6 +82,7 @@ usage(void)
 "    -frame                  don't ignore window manager frames\n"
 "    -button number          specific button to be pressed to select window\n"
 "    -all                    kill all clients with top level windows\n"
+"    -version                print version and exit\n"
 "\n";
 
     fprintf (stderr, "usage:  %s [-option ...]\n%s",
@@ -129,6 +134,9 @@ main(int argc, char *argv[])
 	      case 'a':			/* -all */
 		kill_all = True;
 		continue;
+              case 'v':
+                puts(PACKAGE_STRING);
+                exit(0);
 	      default:
 		usage ();
 	    }