[ILUG] grep or awk

[Fergal Daly]

sed 's/.*(\(.*\)).*/\1/'

will extract stuff from inside brackets but it'll leave lines with no
brackets untouched

On Mon, Sep 10, 2001 at 11:40:09AM +0100, Patton, Tony wrote:
> I am trying to get the ip address of a user that has logged in via
> telnet.
> I can get this information from the 'who -M' command, which gives me the
> following :
> 
> 	xxxxxxx     ttyqb       Sep 10 11:33
> (xxx.xxx.xxx.xxx)
> 
> what i want is to get the ip address from within the brackets.
> 
> any solutions?
> 
> using Compaq Tru64 btw.
> 
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