: I often cached myself renaming a file in some other directory like this, : mv some/dir/some/file some/dir/some/file_renamed. : : But there is an easier way: : mv some/dir/some/{file,file_renamed} : : This also works for copying: : cp /etc/mail/{sendmail.cf,sendmail.cf.orig} : : Or vimdiff: : vimdiff /etc/mail{sendmail.cf,sendmail.cf.orig} : : And thats why I love zsh so much, you can even tabcomplete after the {, try that in bash f.e. :) : Be creative, I'm sure there are many useful fields of application