This invokes the default pager, which is likely to be
less, other functions may apply.
It can be used to break out from restricted environments by spawning an interactive system shell.
man man !/bin/sh
This only works for GNU
man and requires GNU
groff to be installed).
man '-H/bin/sh #' man
It reads data from files, it may be used to do privileged reads or disclose files outside a restricted file system.
If the binary is allowed to run as superuser by
sudo, it does not drop the elevated privileges and may be used to access the file system, escalate or maintain privileged access.
sudo man man !/bin/sh