login
ls [-la]
cd
.
..
export PATH
echo [-n]
variable dereference ($, sometimes with {})
which
redirection
cat [-n]
appending
mv
cp [-pr]
rm [-rf] !!!!!!
man
less
wc [-lcw]
pwd
history (alter HISTSIZE)
growtree.sh
colex (unixstat)
pipes
sort [-kgr]
grep [-iwv]
clear

UNIXSTAT
colex
stats [min mean max ...]
export MANPATH
dm
abut
linex
perm
transpose

SCRIPTS
#!/bin/bash
# This is a comment.
if list; then list; fi
chmod a+x
variables
backticks
arithmetic evaluation $[]
for name in ; do ; done
for ((expr1 ; expr2 ; expr3 )) ; do ; done
function foo () { cmd1; cmd2; cmd3; ... }