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authorMaria Kustova <maxa@catit.be>2014-03-18 09:59:19 +0400
committerKevin Wolf <kwolf@redhat.com>2014-03-19 09:39:41 +0100
commitd208cc353a2860dc9614ba651439713e4ecdf9d3 (patch)
treef448d9fcd748691887ae2022118420f365d96468 /qemu-io.c
parent6e6507c06beb28e0551f68b13aa843ed1303f0f0 (diff)
downloadfocaccia-qemu-d208cc353a2860dc9614ba651439713e4ecdf9d3.tar.gz
focaccia-qemu-d208cc353a2860dc9614ba651439713e4ecdf9d3.zip
qemu-io: Extended "--cmd" description in usage text
It's not clear from the usage description that "--cmd" option accepts
its argument as a string, so any special symbols have to be quoted from
the shell.

Updates in usage text:
 - Specified parameter format for "--cmd" option.
 - Added an instruction how to get help for "--cmd" option.

Signed-off-by: Maria Kustova <maria.k@catit.be>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'qemu-io.c')
-rw-r--r--qemu-io.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/qemu-io.c b/qemu-io.c
index 2d119c28a6..5d7b53f756 100644
--- a/qemu-io.c
+++ b/qemu-io.c
@@ -193,10 +193,11 @@ static const cmdinfo_t quit_cmd = {
 static void usage(const char *name)
 {
     printf(
-"Usage: %s [-h] [-V] [-rsnm] [-c cmd] ... [file]\n"
+"Usage: %s [-h] [-V] [-rsnm] [-c STRING] ... [file]\n"
 "QEMU Disk exerciser\n"
 "\n"
-"  -c, --cmd            command to execute\n"
+"  -c, --cmd STRING     execute command with its arguments\n"
+"                       from the given string\n"
 "  -r, --read-only      export read-only\n"
 "  -s, --snapshot       use snapshot file\n"
 "  -n, --nocache        disable host cache\n"
@@ -207,8 +208,10 @@ static void usage(const char *name)
 "  -T, --trace FILE     enable trace events listed in the given file\n"
 "  -h, --help           display this help and exit\n"
 "  -V, --version        output version information and exit\n"
+"\n"
+"See '%s -c help' for information on available commands."
 "\n",
-    name);
+    name, name);
 }
 
 static char *get_prompt(void)