Time Saving Bash Tricks
This is a followup from the lightning talk '5 Time Saving Bash Tricks' at DevOpsDays, Bangalore 2011.
These work with the emacs-readline, which is the default configuration in most ditributions (including OS X).
- C means Control
- M means Meta (usually mapped to Alt/Option or Escape on QWERTY keyboards.)
`M` stands for the Meta key. Commonly represented by the Alt/Option/Esc key on your keyboard. `C` stands for the Control key. Example -- `C-k` means 'hit `k` while keeping `Control` pressed.' `M-.` Yank the last argument to the previous command. `M-C-y` Yank the first argument to the previous command. `C-k, C-w, M-d, C-u` All these kill text in different ways and save it in the kill-ring. `C-y` Yank most recent item from the kill-ring. `M-y` Immediately follows a `C-y`. Cycle through the kill-ring. `!!` Substitute the previous command (e.g. `sudo !!`)
Ensuring Bash Hisory across multiple sessions
shopt -s histappend
Remember to use pushd and popd when in deeply nested directories.
Background tail processes to share STDOUT and STDERR with any REPL (including the shell itself.)
tail -f httpd.log &
Then start the REPL, or continue working on the shell.