shows how to rename a set of files, like changing *.new to *.old.
Here's a different way, done from inside vi.
This gives you a chance to review and edit the commands before you run them.
Here are the steps:
% vi Start vi without a filename:r !ls *.new Read in the list of files, one filename per line:%s/.*/mv & &/ Make mv command lines:%s/new$/old/ Change second filenames; ready to review:w !sh Run commands by writing them to a shell:q! Quit vi without saving
for ls that changes its output format,
that can cause trouble here.
If your alias gives more than a plain list of filenames in a column, use
!/bin/ls instead of just !ls.