This isn’t so much a blog post, as it it a note. I’ll probably be updating this list in the future with more shortcuts as I discover them.
#1 - Last command shortcut
!! expands to the entirety of the last command run. Forgot sudo on a command? no problem, just type
#2 - Last argument of the last command
$_ is set to the last argument of the last command run. Very useful if doing lots of stuff with the same file.
#3 - Search the history
!gcc will expand to the last command that starts with gcc. If you’re more visual,
CTRL+r is your friend. type to search.
#4 - Beginning of the line
CTRL+a - Jump to the beginning of the line
#5 - Clear the screen
CTRL+l - Much quicker than typing
#6 - Quick replace
Replace “emacs” from the last command with “vi”, type
#7 - Quick Exit
CTRL+d - just like typing “exit”, but much faster.
#8 - Pipe into “while read line”
This lets you execute a series of commands for each line of text that’s piped in, via read and a for loop:
cat file.txt | while read line; do echo "$line"; done
Also, we can change the delimeter that read uses with the
2017-10-12- Initial Revision
2017-10-12- Renamed article to be titled "Essential Bash Shortcuts" from "My favorite bash shortcuts"
2017-10-12- Added #8: Pipe into "while read line"
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