Even GUI-oriented PC users should pay attention to parms of programs like commandline types do. Many because they are valuable in desktop shortcuts. An example is the shutdown command:
E:\Documents and Settings\Wayne>shutdown ?
Usage: shutdown [-i | -l | -s | -r | -a] [-f] [-m \\computername] [-t xx] [-c "comment"] [-d up:xx:yy]
No args Display this message (same as -?)
-i Display GUI interface, must be the first option
-l Log off (cannot be used with -m option)
-s Shutdown the computer
-r Shutdown and restart the computer
-a Abort a system shutdown
-m \\computername Remote computer to shutdown/restart/abort
-t xx Set timeout for shutdown to xx seconds
-c "comment" Shutdown comment (maximum of 127 characters)
-f Forces running applications to close without warning
-d [u][p]:xx:yy The reason code for the shutdown
u is the user code
p is a planned shutdown code
xx is the major reason code (positive integer less than 256)
yy is the minor reason code (positive integer less than 65536)
Create desktop shortcuts:
- shutdown -s -t 00
As you can see above, this says to shutdown immediately.
- shutdown -r -t 00
As you can see above, this says to shutdown and restart immediately.
- shutdown -l -t 00
As you can see above, this says to logoff immediately.