jls usage

[Colin House]

On 12/07/2013 11:19 AM, Fbsd8 wrote:
> In a .sh script I'm trying to get the jid for a single jail using this code
>
> jid=`jls -j jailname | cut -f 1- | awk '{print $1}'`
>
> The first line output by jls is a title line which the cut command is
> suppose to cut out so the first field on line 2 gets selected by the awk
> command. This is not working as I want, I get the first field of the
> title line.
>
> Is the cut command the correct command to us here?
>
> This is what the jls command shows
> # /root >jls -j dir2
>     JID  IP Address      Hostname     Path
>      15  10.0.10.24      dir2         /usr/jails/dir2
>
>   I am after the number 15
>
> Thanks in advance
>
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this might do the trick for you:

jls -j jailname | tail -1 | awk '{print $1}'