computing tip of the day

unix shell:

cd - (Change to previous directory)
for I in `seq 0 10`; do echo $I ; done (Good for generating SQL inserts etc)

windows cmd shell:

subst drive1: drive2:\longasspath (Alias a new drive letter to an existing path)
pushd path / popd ( like cd - )
e.g.: pushd \server\share\a\b\c\d && cmdThatDoesn'tLikeUNCPaths && popd
echo %VAR:string1=string2% (replace string1 in VAR with string2)
echo %~dp0 like basename $0 in unix