Mailinglist Archive: opensuse (2800 mails)

[Jan Karjalainen <jrock@xxxxxxx>]

Randall R Schulz wrote:
> Jan,
>
> On Wednesday 07 February 2007 14:49, Jan Karjalainen wrote:
>   
> > Brian Jackson wrote:
> >     
> > > On Wednesday 07 February 2007 14:38, Jan Karjalainen wrote:
> > >       
> > > > I'd like to go through a file and find all the lines with the word
> > > > "LOG" in them.
> > > > How do I do that? Like "^(*[LOG]*)$" or what...?
> > > >         
> > > grep LOG [filename]
> > >
> > > I think you're trying to make this more complicated than it is. 
> > > Now if you want LOG to be a word by itself, then:
> > >
> > > grep ' LOG ' [filename]
> > >
> > > Of if it can be at the beginning or end of a line...
> > >
> > > grep '\bLOG\b' [filename]
> > >       
>
> I usually just use the "-w" option when I want to find the pattern only 
> as a full word (i.e., be bounded on each end by either a line beginning 
> or end or by a non-alphanumeric character).
>
> % grep --help
> ...
>   -w, --word-regexp         force PATTERN to match only whole words
> ...
>
>
> Of course, the "\b" (and it's close relative, \B) is more flexible, 
> giving you the ability to place the pattern at a word boundary on one 
> end and not the other.
>
>
>   
> > > good luck,
> > > brian
> > >       
> > Thanks for the tip, but I knew about grep already.
> > It's because of an application that has a search and replace function
> > which supports regular expressions...
> >     
>
> Are you saying you need not simply to find the lines that contain "LOG" 
> but also to apply some modification to such lines? Then you'll 
> want "sed" or "awk" or possibly to use Perl.
>
> Can you clarify what you need to accomplish? Based on your original 
> question, Brian's answer seems correct and appropriate.
>
>
>   
I'm trying to parse through a file and delete all the lines with the 
word "LOG" on it, eg. replace it with "".


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