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sys/shell/gnrc_netif: Allow 'ifconfig help'

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Currently a valid netif name must be passed to show the usage
instructions:

```
> ifconfig help
error: invalid interface given
> ifconfig 6 help
usage: ifconfig
usage: ifconfig <if_id> [up|down]
[...]
```

`ifconfig --help` is also accepted.
This commit is contained in:
Erik Ekman 2021-10-14 23:29:51 +02:00
parent 74925c0ab0
commit ccfe80c844
1 changed files with 9 additions and 2 deletions
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11
sys/shell/commands/sc_gnrc_netif.c
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@ -1432,6 +1432,7 @@ static void _l2filter_usage(const char *cmd)
static void _usage(char *cmd)
{
printf("usage: %s\n", cmd);
printf("usage: %s help\n", cmd);
_link_usage(cmd);
_set_usage(cmd);
_flag_usage(cmd);
@ -1797,8 +1798,14 @@ int _gnrc_netif_config(int argc, char **argv)
else {
netif_t *iface = netif_get_by_name(argv[1]);
if (!iface) {
puts("error: invalid interface given");
return 1;
if ((strcmp(argv[1], "help") == 0) ||
(strcmp(argv[1], "--help") == 0)) {
_usage(argv[0]);
return 0;
} else {
puts("error: invalid interface given");
return 1;
}
}
if (argc < 3) {