LUG@GT :: Articles :: Cool Shell Tricks

This was written by Everyone! and given on Wed Nov 9 2005.

shopt -s cdspell	"minor errors in the spelling of a directory component in a cd command will be corrected"
pushd/popd/dirs	"Directory stacks"
binary <<< here docs	"single line here docs"
!foo	"repeat last command that started with foo"
^find^replace^	"repeat last command, but replace find with replace"
${!tmp_var}	"Indirect reference to the contents of the variable whose name is in tmp_var"
shopt -s nullglob	"Expand failed globs to null"
something with IFS	"IFS is the input field separator"
OPTION=${OPTION:-"default"}	"Default values in variable expansions."
[[ expr ]]	"Double-bracket: Do what I mean!"
(if in zsh) cd build/arch1/foo cd arch1 arch2	"will search and replace on current directory then switch to new directory"

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