$ <span class="sh-fn">touch</span> foo bar
$ <span class="sh-fn">ls</span> | <span class="sh-fn">mmv</span> -i sha1sum
$ <span class="sh-fn">ls</span> | <span class="sh-fn">mmv</span> awk <span class="sh-str">'{ print $1 }'</span>
$ <span class="sh-fn">ls</span>
e242ed3bffccdf271b7fbaf34ed72d089537b42f
f1d2d2f924e986ac86fdf7b36c94bcdf32beec15