How to restart computer without pressing 'reset button'

"Different versions of linux have different commands to shutdown and reboot the computer. Either provide the OS and distribution you're using, or try these commands:

shutdown -r now
init 6
reboot

If you want to only power it down, use:

shutdown -h now
halt
poweroff
init 0

Both sets of commands typically need sudo permission to execute."

"If you have Magic SysRq enabled in your kernel, you can use alt+printscreen+(char) even if your system is relatively broken. (for example, if X is hosed)

Don't use this approach unless you can't do a normal shutdown -- shutdown -r now or similar is far better if you actually have a usable command line."

"For SysV style: shutdown -g0 -y -i6

For BSD style: shutdown -r now"

"Two sequential CTRL+ALT+DEL commands will reset Windows* machines.

* I haven't used this since XP..."