# Python
python -c 'import pty; pty.spawn("/bin/bash")'
# Bash
echo os.system('/bin/bash')
# Bash
/bin/sh -i
# Perl
perl —e 'exec "/bin/sh";'
# Perl
perl: exec "/bin/sh";
# Ruby
ruby: exec "/bin/sh"
# Lua
lua: os.execute('/bin/sh')
# (From within IRB)
exec "/bin/sh"
# (From within vi)
:!bash
# (From within vi)
:set shell=/bin/bash:shell
# (From within nmap)
!sh