Source: - bash-shortcuts-for-maximum-productivity Really useful article. Practice until you remember these little tricks. This article will save you a lot of time
Sharing this article on the blog, so that readers can get best tips at one location.
Command Editing Shortcuts
- Ctrl + a – go to the start of the command line
- Ctrl + e – go to the end of the command line
- Ctrl + k – delete from cursor to the end of the command line
- Ctrl + u – delete from cursor to the start of the command line
- Ctrl + w – delete from cursor to start of word (i.e. delete backwards one word)
- Ctrl + y – paste word or text that was cut using one of the deletion shortcuts (such as the one above) after the cursor
- Ctrl + xx – move between start of command line and current cursor position (and back again)
- Alt + b – move backward one word (or go to start of word the cursor is currently on)
- Alt + f – move forward one word (or go to end of word the cursor is currently on)
- Alt + d – delete to end of word starting at cursor (whole word if cursor is at the beginning of word)
- Alt + c – capitalize to end of word starting at cursor (whole word if cursor is at the beginning of word)
- Alt + u – make uppercase from cursor to end of word
- Alt + l – make lowercase from cursor to end of word
- Alt + t – swap current word with previous
- Ctrl + f – move forward one character
- Ctrl + b – move backward one character
- Ctrl + d – delete character under the cursor
- Ctrl + h – delete character before the cursor
- Ctrl + t – swap character under cursor with the previous one
Command Recall Shortcuts
- Ctrl + r – search the history backwards
- Ctrl + g – escape from history searching mode
- Ctrl + p – previous command in history (i.e. walk back through the command history)
- Ctrl + n – next command in history (i.e. walk forward through the command history)
- Alt + . – use the last word of the previous command
Command Control Shortcuts
- Ctrl + l – clear the screen
- Ctrl + s – stops the output to the screen (for long running verbose command)
- Ctrl + q – allow output to the screen (if previously stopped using command above)
- Ctrl + c – terminate the command
- Ctrl + z – suspend/stop the command
Bash Bang (!) CommandsBash also has some handy features that use the ! (bang) to allow you to do some funky stuff with bash commands.
- !! – run last command
- !blah – run the most recent command that starts with ‘blah’ (e.g. !ls)
- !blah:p – print out the command that !blah would run (also adds it as the latest command in the command history)
- !$ – the last word of the previous command (same as Alt + .)
- !$:p – print out the word that !$ would substitute
- !* – the previous command except for the last word (e.g. if you type ‘find some_file.txt /‘, then !* would give you ‘find some_file.txt‘)
- !*:p – print out what !* would substitute
- $0 - The name of the Bash script.
- $1 - $9 - The first 9 arguments to the Bash script. (As mentioned above.)
- $# - How many arguments were passed to the Bash script.
- $@ - All the arguments supplied to the Bash script.
- $? - The exit status of the most recently run process.
- $$ - The process ID of the current script.
- $USER - The username of the user running the script.
- $HOSTNAME - The hostname of the machine the script is running on.
- $SECONDS - The number of seconds since the script was started.
- $RANDOM - Returns a different random number each time is it referred to.
- $LINENO - Returns the current line number in the Bash script.