[CentOS] Extract lines from text file
Tony Molloy
tony.molloy at ul.ie
Wed Aug 15 19:40:16 UTC 2012
On Wednesday 15 August 2012 19:46:42 Les Mikesell wrote:
> On Wed, Aug 15, 2012 at 1:26 PM, Tony Molloy <tony.molloy at ul.ie>
wrote:
> >> ]$ cat testcentoslist | egrep ^m.*:.*:.*:850:
> >> m9718308:pw:9301:850: Lynch :/home/pgstud/m9718508:/bin/bash
> >
> > Exactly what I needed. I'll just drop the cat as a later poster
> > pointed out.
>
> sed -n -e '/pattern/p' can match anything grep would do and might
> be even more useful if you want substitutions for subsequent use.
> And of course perl can do anything sed can do, and then some...
>
True true, and of course C could do anything and everything ;-)
But all I need is a simple script which will be run once a year to
remove the graduated students from the password file.
Regards,
Tony
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