shotdown -a command only works when we are at desktop. Basically this command is used when any services fails and showning the message " Your system is shout down within xxx second". To stop uncertain shoudown we rune this command....
no, i meant this:
u've pressed the turnoff button in the shutdown dialog... your system is going down for a shut down. now if you wanna avert this use the command shutdown -c you can use it easily by pressing WINKEY+R launching the RUN bar, and then typing shutdown -c,pressing enter