Linux CLI 19 🐧 su and sudo commands

su →  is used to switch to another user
su -  →  switches to superuser/root
su -l  → switches to superuser/root
exit  → exits from the user
su -l username  → switches to a specific user
-c option   → executes one command with the privileges of another user
su -c 'ls /bin'  → executes the command for root user

sudo stands for superuser do
a normal user can run commands with root/admin privileges
sudo ls /bin  → lists the contents of bin directory
sudo -l  → lists what privileges are granted 
sudo nano /etc/sudoers  → to add, remove users that can use sudo command
username ALL=(ALL:ALL) ALL  → use this template to add new user, replace username with the users username
sudo systemctl daemon-reload   → to reload sudoers file and apply changes

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