2004-01-23 Fedora Tips 26:
If you want to automate one process, for example, you downloaded many .tar.gz archives in some directory, you can enter that directory and do:
$ for i in *; do tar -zvxf $i; done;'*' to use all the archives in the directory and 'tar -zvxf' is the action, you can automate a lot of things with that. - submitted by Fernando Castellano A.