script /dev/null -c bash
python -c 'import pty;pty.spawn("/bin/bash")'
python2 -c 'import pty;pty.spawn("/bin/bash")'
python3 -c 'import pty;pty.spawn("/bin/bash")'
echo os.system('/bin/bash')
/bin/sh -i
script -qc /bin/bash /dev/null
perl -e 'exec "/bin/sh";'
perl: exec "/bin/sh";
ruby: exec "/bin/sh"
lua: os.execute('/bin/sh')
IRB: exec "/bin/sh"
vi: :!bash
vi: :set shell=/bin/bash:shell
nmap: !sh
press CTRL + Z (go background in linux)
stty raw -echo;fg (get shell and return to session)
press ENTER to get shell