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weston-launch: improve help text for -u and -t 

Explain that -u requires root and -t requires -u. Most importantly,
document in what format does -t expect the tty to be given.

It has been confusing, because Weston's --tty option takes an integer,
weston-launch takes a full device path.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Acked-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>
This commit is contained in:
Pekka Paalanen 2017-11-01 12:20:24 +02:00
parent 625f56f062
commit 1a2adfedea
1 changed files with 4 additions and 2 deletions
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6
libweston/weston-launch.c
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@ -676,8 +676,10 @@ static void
help(const char *name)
{
fprintf(stderr, "Usage: %s [args...] [-- [weston args..]]\n", name);
fprintf(stderr, " -u, --user Start session as specified username\n");
fprintf(stderr, " -t, --tty Start session on alternative tty\n");
fprintf(stderr, " -u, --user Start session as specified username,\n"
" e.g. -u joe, requires root.\n");
fprintf(stderr, " -t, --tty Start session on alternative tty,\n"
" e.g. -t /dev/tty4, requires -u option.\n");
fprintf(stderr, " -v, --verbose Be verbose\n");
fprintf(stderr, " -h, --help Display this help message\n");
}