Find / Replace escape

Posted on 2006-11-08
Last Modified: 2008-02-01

I want to do a find and replace on ALL files in a directory, using this:

       find /home/me/directory/ -type f | while read fname
          sed 's/\FIND/REPLACE/g' $fname > $
         mv -f $ $fname

But I want to find this:
   <img src="images/my_image.jpg" width="150" height="50" hspace="5">

and replace it with this:
   <a href="" target="_blank"><img src="image.gif" width="50" height="50" hspace="5" border="0" /></a>

What charactors to I need to escape and how do I escape them?

Question by:hankknight
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LVL 45

Accepted Solution

sunnycoder earned 400 total points
ID: 17896994
Hi hankknight,

You need to escape each speacial character with a \  ... field separator is also special character in a sed command, so use : instead of /  and you dont have to escape the / characters ...

sed 's:<img src="images/my_image.jpg" width="150" height="50" hspace="5">:<a href="" target="_blank"><img src="image.gif" width="50" height="50" hspace="5" border="0" /></a>:g'

This should work ... Let me know the error if it fails

LVL 16

Author Comment

ID: 17898468

What about each of these?  Which ones need escaping?

? \ . [ ] ^ $ & % \ _ > + = | !
LVL 84

Assisted Solution

ozo earned 100 total points
ID: 17900265
\\  \. \[  \^  \$  
and perhaps \! depending on your shell
LVL 45

Expert Comment

ID: 17903716
Look at the man page of sed on your machine ... that should contain the list of special characters


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