Vim and advanced bash: Summary of Basic Commands

Save commands in files (usually called shell scripts) for re-use.

bash filename runs the commands saved in a file.

$@ refers to all of a shell script’s command-line arguments.

$1, $2, etc., refer to the first command-line argument, the second command-line argument, etc.

Place variables in quotes if the values might have spaces in them.

Letting users decide what files to process is more flexible and more consistent with built-in Unix commands.

find finds files with specific properties that match patterns.

grep selects lines in files that match patterns.

--help is a flag supported by many bash commands, and programs that can be run from within Bash, to display more information on how to use these commands or programs.

man command displays the manual page for a given command.

$(command) inserts a command’s output in place.

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When we talk of ‘job control’, we really mean ‘process control’

A running process can be stopped, paused, and/or made to run in the background

A process can be started so as to immediately run in the background

Paused or backgrounded processes can brought back into the foreground

Process information can be inspected with ps

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