Linux.com

Home Learn Linux Linux Tutorials Advanced Tips for Search-and-Replace in Linux

Advanced Tips for Search-and-Replace in Linux

In my previous article about regular expressions, I gave some examples of ways in which you can use them on the command line, with various utilities. Regexps can also be used within many text editors (sometimes with a slightly different syntax, but the gist is the same). I'll use Vim and Emacs as examples; for different editors you may need to check the manual for the syntax details.

Search-and-replace is likely to be the operation you'll most often use regexps for in an editor. First let's look at a straightforward non-regexp search-and-replace. Let's say that you've just decided to rename a variable from foo to fooOne. In Vim, hit Esc for command mode, then use this command:

:%s/foo/fooOne/g

% means that the operation should be carried out throughout the whole document. The important part is s/foo/fooOne/, which means "replace every instance of 'foo' with 'fooOne'". The final g means "global"; without this you'll just replace the first instance on every line, but with it, you replace every occurrence...

Article Source LinuxPlanet
Read More

 

Comments

Subscribe to Comments Feed

Who we are ?

The Linux Foundation is a non-profit consortium dedicated to the growth of Linux.

More About the foundation...

Frequent Questions

Join / Linux Training / Board