Find and Replace in all files
23 August 2013
You want to change a string with another one in some directory in your project.
Here is a one liner to do that:
1 for spec_file in $(ag -g _spec.rb spec/); do sed -i.bak 's/john/jane/g' $spec_file; done
A few caveats:
- The match should be case-insensitive. Unfortunately,
s/john/jane/gIdoes not work under OSX.
- The -i tells sed to do an in-place replacement. Again, under OSX, however, you must give an extension for the backup files. A
git clean -fcan get rid of these in one fell swoop.
- You can use
find spec/ -name '_spec.rb'instead of the ag command. But why would you?
(If you know how to do the replacement with awk, or something similar, please tell me in the comments.)
Your text editor might already have a
Find & Replace in project functionality. But maybe it does not. And surely, the command line version is most flexible.