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| # 711 | |
| # chroot | |
| compgen -u # list all users | |
| compgen -g # list all groups | |
| cut -d: -f1 /etc/passwd # list local users | |
| cut -d: -f1,3 /etc/passwd | egrep ':[0-9]{4}$' | cut -d: -f1 # human users | |
| cat /etc/group # list all groups on system | |
| sudo adduser username groupname | |
| sudo deluser --remove-home username | |
| sudo deluser --remove-all-files username | |
| sudo addgroup groupname | |
| sudo delgroup groupname | |
| su - username # login to user (password required) | |
| ssh-keygen -t rsa -m pem -C "[email protected]" # generate a new SSH key | |
| echo [public_key_string] >> ~/.ssh/authorized_keys # copy public key to `authorized_keys` file | |
| ~/.ssh # 0700 | |
| ~/.ssh/authorized_keys # 0600 |
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