Regular expressions: renaming files with 'sed'

[s0xxx]

Originally Posted by J65nko

The input was a list of files, the output should be mv commands to rename the files. The sed solution is a little bit complicated, because there is no easy way to save the original file name.

[soxxx@bsd test]$ ls lat* | sed 's/\(.*\)/mv & &/; s/-/_/; s/\(.*\) \(.*\) \(.*\)/\1 \3 \2/'
mv latest-pkg latest_pkg
mv latest-pkg-calyx latest_pkg-calyx
mv latest-pkg-esat latest_pkg-esat
mv latest-pkg-plig latest_pkg-plig
[soxxx@bsd test]$ ls lat* | sed 's/\(.*\)/mv & &/; s/-/_/; s/\(.*\) \(.*\) \(.*\)/\1 \3 \2/' | sh
[soxxx@bsd test]$ ls
latest_pkg  latest_pkg-calyx  latest_pkg-esat  latest_pkg-plig

Originally Posted by J65nko

Your one-liner does not create these 'mv' commands files, as was the requirement

Right, I wasn't thinking about 'mv' command at all!