lscpu: add --version option

[thirdparty/util-linux.git] / sys-utils / lscpu.c

diff --git a/sys-utils/lscpu.c b/sys-utils/lscpu.c
index 1e37471ac45b6bd6597f01db376fea3ab1278de8..90821de5cc0d493480f639c4e91f9260c545378a 100644 (file)
--- a/sys-utils/lscpu.c
+++ b/sys-utils/lscpu.c
@@ -1178,7 +1178,8 @@ static void __attribute__((__noreturn__)) usage(FILE *out)
        fputs(_(" -h, --help          print this help\n"
                " -p, --parse <list>  print out a parsable instead of a readable format\n"
                " -s, --sysroot <dir> use directory DIR as system root\n"
-               " -x, --hex           print hexadecimal masks rather than lists of CPUs\n\n"), out);
+               " -x, --hex           print hexadecimal masks rather than lists of CPUs\n"
+               " -V, --version       print version information and exit\n\n"), out);
 
        exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
 }
@@ -1195,6 +1196,7 @@ int main(int argc, char *argv[])
                { "parse",      optional_argument, 0, 'p' },
                { "sysroot",    required_argument, 0, 's' },
                { "hex",        no_argument,       0, 'x' },
+               { "version",    no_argument,       0, 'V' },
                { NULL,         0, 0, 0 }
        };
 
@@ -1202,7 +1204,7 @@ int main(int argc, char *argv[])
        bindtextdomain(PACKAGE, LOCALEDIR);
        textdomain(PACKAGE);
 
-       while ((c = getopt_long(argc, argv, "hp::s:x", longopts, NULL)) != -1) {
+       while ((c = getopt_long(argc, argv, "hp::s:xV", longopts, NULL)) != -1) {
                switch (c) {
                case 'h':
                        usage(stdout);
@@ -1233,6 +1235,10 @@ int main(int argc, char *argv[])
                case 'x':
                        hex = 1;
                        break;
+               case 'V':
+                       printf(_("%s from %s\n"), program_invocation_short_name,
+                              PACKAGE_STRING);
+                       return EXIT_SUCCESS;
                default:
                        usage(stderr);
                }