Re: sed, bash script

[Torsten Reuss]

csj wrote:

At Tue, 16 Sep 2003 17:08:51 +0200,
Matthias Czapla wrote:
 

On Tue, Sep 16, 2003 at 07:39:39AM -0700, Ric Otte wrote:
   

Hi, I would like to run all of the files in some directories
through sed, in order to edit the files.  I can do it for
individual files by typing: cat filename|sed command>filename
But that requires me to run that command for each file.  I
was wondering if anyone could 1) give me a reference to a
simple bash tutorial that will explain how to set up a script
to do things like this,
     

http://www.tldp.org/HOWTO/Bash-Prog-Intro-HOWTO.html

   

and 2) tell me how to do it.
     

for f in *; do tmp=`tempfile`; cat $f | sed command > $tmp ; mv $tmp $f; done
   

Is there anything intrinsically wrong with:

find directory -name "*.foo" | xargs sed -i -f sed_script

 

One difference not mentioned yet is that the "for f in" solution will 
work on files in the current directory while the "find" solution will 
recurse through subdirectories. If using find I would also add a "-type 
f" so you don't end up trying to run sed on directories.

Regards,
               Torsten
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