[CentOS] sed

Fri May 23 18:51:24 UTC 2008
Les Mikesell <lesmikesell at gmail.com>

Stephen Harris wrote:
> On Fri, May 23, 2008 at 06:59:24PM +0200, Thomas Johansson wrote:
>> Stephen Harris wrote:
>>>  sed 's/^\([^    ]*[     ]*[^    ]*\)\([   ]*.*\)$/\1.contoso.com\2/'
>>> (where there's a space *and* a TAB inside each of the [  ]  )
>> The above version easier to read and "copy paste". Space is space and tabe 
>> is \t
>> sed 's/^\([^ \t]*[ \t]*[^ \t]*\)\([ \t]*.*\)$/\1.contoso.com\2/'
> I grew up with versions of 'sed' that don't understand this new-fangled
> method of specifying tabs, and write enough cross-platform code that
> I can't rely on it (still doesn't work in Solaris 10, for example).

perl can do anything sed can do and has almost no platform or version 
related syntax differences - plus it has \s to represent 'whitespace' 
and you don't have to bang your head on the wall when you are half done 
and realize you have to do something spanning multiple lines.

   Les Mikesell
    lesmikesell at gmail.com