Command Line Tips

Note: this is all in bash.

1. Use a Unix, such as Linux or Mac OS X. Your'e really missing out if your'e using Windows.

2. Changing the file extensions of all .lsp files in a directory to .lisp

   for file in `ls *.lsp`; do mv $file `basename $file lsp`lisp; done;

3. Replacing text in a file.

   perl -pi -e "s/old/new/g" filename.txt

4. Replacing text in a bunch of files

   find . -name "*.ext" -exec perl -pi -e "s/old/new/g" {} \;