Re: Why grep still exists?

[iain d broadfoot <ibroadfo@cis.strath.ac.uk>]

* jqdkf@zju.edu.cn (jqdkf@zju.edu.cn) wrote:
> Hi,
> 
> I'm just wondering why grep still exists in every distribution of UNIX
> or UNIX like system. As egrep can support a full featured regular
> expression, it is much more powerful than grep. Is it only for backport
> support?

ibroadfo@iain-vaio-fx405:~$ whereis egrep
egrep: /bin/egrep /usr/share/man/man1/egrep.1.gz

ibroadfo@iain-vaio-fx405:~$ ls /bin/egrep 
-rwxr-xr-x    1 root     root           33 Apr 21 17:02 /bin/egrep*

ibroadfo@iain-vaio-fx405:~$ cat /bin/egrep 
#!/bin/sh
exec grep -E ${1+"$@"}

ibroadfo@iain-vaio-fx405:~$ 

does that answer your question? :D

iain

-- 
wh33, y1p33 3tc.

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