[CentOS] Extract lines from text file

Thu Aug 16 06:53:25 UTC 2012
Tony Molloy <tony.molloy at ul.ie>

On Wednesday 15 August 2012 20:53:33 m.roth at 5-cent.us wrote:
> Tony Molloy wrote:
> > 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.
> 
> Ah, but are you sure they're not just dropped out for a term, or
>  about to become indentured servants, er, grad students? In that
>  case, maybe just change their login shell to /bin/noLogin
> 
>       mark
> 

No these are 4th year graduated students. If they stay on as post 
graduate students they have to re-register. So clean them out I say 
;-)

Tony
> 
> 
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