SPUG: replace a text to other inside a file

[Umar Cheema]

I usually take care of these things by running a perl regex on the command 
line:

$ perl -pi.bak -e 's/\.txt$//g' some_file.txt

where 'some_file.txt' is your file that contains some text. You can 
modify the regex to match your requirements and/or file's content 
structure (this regex will not work if you expect to have multiple .txt 
patterns on the same line or if .txt is not the last thing on the line, etc). 
You can also pass in *.txt as an argument to replace your text in multiple 
files.

The .bak will create backups of your original file (some_file.txt.bak) 
incase you make a mistake. You can leave the .bak part out if you're a 
confident and fearless man who laughs at the word 'mistake'.


Umar


On Tue, 28 Dec 2004, Sachin Chaturvedi wrote:

> i want to change some text inside file to other using perl 
> for example
> 
> file contains
> 
> source ../setextreme.txt
> 
> and i want to change it to 
> 
> source ../../setextreme
> 
> can u tell me if i can do using perl script.
> 
> i am not getting much help from text book
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