# 1.2 !

    ! <shell command>
    ... `<shell command>` ...

Shell commands can be executed within Pyxplot by prefixing them with pling (!) characters, as in the example:

    !mkdir foo

As an alternative, back-quotes (‘) can be used to substitute the output of a shell command into a Pyxplot command, as in the example:

    set xlabel `echo "'" ; ls ; echo "'"`

Note that back-quotes cannot be used inside quote characters, and so the following would not work:

    set xlabel '`ls`'