- Python shell upgrade
```bash
which python
which python3
python -c 'import pty; pty.spawn("/bin/bash")'
[ctrl+z]
stty raw -echo; fg
reset #optional step
export TERM=xterm #optional step
stty rows 38 columns 116 #optional step
```
- Script technique
```bash
which script
script /dev/null -c bash
[ctrl+z]
stty raw -echo; fg
reset
screen
```