Ubuntu display warning before shutdown over ssh

Question

Ok I admit it...

I stupidly shutdown my remote server via ssh instead of restarting it like I wanted to do :(

To prevent me doing a silly again, is there a way to display a warning / confirmation on a shutdown command? (like "Are you sure you want to shut down this server?" yes/no )

OR, can I not allow shutting down (but not restarting because I still might need to do that from time to time) over ssh?

Answer 1

Try molly-guard:

protects machines from accidental shutdowns/reboots

Answer 2

you could alias the shutdown command from your account, edit

/home/username/.bashrc

add

function savemefromlookingstupid(){
    echo 'Are you sure you wanna SHUTDOWN? [n]'
    read yesno
    if [ $yesno == y ]; then
        sudo /usr/sbin/shutdown -h now
        exit 1
    fi
    echo 'Thought so.. watch it, that was close..'
}
alias restart_server='sudo /user/sbin/shutdown -r now'
alias shutdown='savemefromlookingstupid'

To restart, you would run "restart_server"

Answer 3

You can make a rule always pass time argument to shutdown:

# shutdown -h +2

Then you can cancel shutdown within 2 minutes:

# shutdown -c

Answer 4

No need to set up an alias. The "reboot" command is fairly standard on linux. Stop using the shutdown command... use reboot.