At least for the PATH, you can also automate the looking. When on a new POSIXy system, I usually try "(IFS=: ; ls $PATH)" at the shell to get a listing of all p

At least for the PATH, you can also automate the looking. When on a new POSIXy system, I usually try "(IFS=: ; ls $PATH)" at the shell to get a listing of all programs available.