#----------------------------------------------------------------------------
shutdown -h now == /sbin/halt
shutdown -r now == /sbin/reboot
^\	- kill current process
chsh -l			= List allowed shells (/etc/shells)
chsh -s shellname	= Change login shell for user (such as pdksh)
Shift-ScrollLock	= Memory info
Shift-Pgup or Shift-PgDn= Scroll back and forth in console
echo $[  ] = (Literal) Command-line Calculator
open -c 5 -- su dave -c top = Open virtual console 5, user Dave, exec TOP
reset == Reset terminal display || stty sane ^J (don't hit Enter)
cat /dev/fd0 >  = Grab floppy to an image-file
nice == Run program in BG (Batch); can also set priority
	renice == Adjust process priority
	renice +1  ' == Lower priority of pid 
	renice +1 -u spoogeboy ' == Lower priority of all processes owned by user
	renice +1 -u spoogeboy -p  -u goovbol -p  ' == Alternate between usernames and pids

#----------------------------------------------------------------------------
history [n] == Display last n commands
+ ' redo  ' == Redo last command containing 'string' 
+ ' !! ' == re-DO last command
+ ' ! ' == DO command # (number from History list) 
+ Example:
+ ' !512 ' == Re-DO command #512 
#----------------------------------------------------------------------------
pushd == Remember this dir, I may want to POPD back to it later (bash)
popd == Go back to the last pushd (bash)
dirs == Print list of remembered PUSHD dirs (Bash)
#----------------------------------------------------------------------------
 s       4       Set user ID (SUID; usually root) on execution
 s       2       Set group ID on execution
 t       1       Set sticky bit
#----------------------------------------------------------------------------
lsmod == List loaded kernel modules (ROOT) 
+ insmod ppa == Insert module 'ppa' into kernel
+ rmmod == Remove loaded module dynamically 
+ modprobe
+ depmod -a == Resolve module dependencies 
#----------------------------------------------------------------------------
Xwin
Ctrl-Alt-'+' == Next higher resolution
Ctrl-Alt-'-'
Ctrl-Alt-Bkspc == Emergency Exit
#----------------------------------------------------------------------------
A simple way to create the special programs is to write `tail scripts': 
	#!/usr/bin/tail +2
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