Brainscape Bash Flashcards
search history forward/backward
CTRL-R / CTRL-S (mnemonic: Reverse history search, Search [forward])
cancel history search
CTRL-G (mnemonic “Get out of here”)
cycle through final parameter of previous commands
ALT-.
cycle through completions (set manually)
ALT-S
go to beginning/end of line
CTRL-A / CTRL-E
go to previous / next command in history
CTRL-P / CTRL-N
move forward/backward (right/left) one word
ALT-F / ALT-B
toggle between beginning of line and current character position
CTRL-XX
clear whole screen, similar to “clear” command
CTRL-L (mnemonic “cLear”)
delete word backward / forward
ALT-Backspace / ALT-D
cut word before/after cursor to clipboard
CTRL-W / CTRL-K (mnemonics, backward just like Vim, CTRL-K “Kill”)
cut the whole line before the cursor to clipboard
CTRL-U
paste the last thing to be cut
CTRL-Y
swap current word with previous
ALT-T
undo
CTRL-_
revert the line to the way it was in history
ALT-R (mnemonic: “Revert”)
how to make a tag on a command in history
just use “#tag”–anything after the tag is a comment, but will be retained in history
how to change to the previous directory
cd -
how to use the previous directory in a command
can be specified with “~-“ (e.g. “tar xzf ~-/moz”)
view all history
history
view last five commands of history
history 5
search history for all commands with “cd” in them
history | grep cd
how to do a reverse-i-search with text you’ve already entered
CTRL-aryr
history for previous command name
!!:0
history to execute the last “ssh” command
!ssh
search history for a string not at the beginning of the command
!?commit?
history to access the second word of the most recent command
!!:1
history to grab everything from the second word on, of the most recent command
!!:1*
history to grab everything from the beginning to the third word of the most recent command
!!:*2
history to grab indices 2-3 of the most recent command
!!:2-3
history for the first/last word of the most recent command
!!:^ / !!:$
access history entry number 51
!51
history access second-to-last most recent command
!-2 (-1 is most recent command, and count back from there)
macro to add an option to the previous command (manually defined)
ALT-O
meaning of single quotes
everything is completely literal, no escaping needed
meaning of double quotes
treated like a string, except that “$” and “" are interpreted
define a variable
ten=10
print out the contents of the variable “ten”, also, what is a caviat with this that you should anticipate
echo $ten if the variable is a string with spaces, you’ll have to quote the variable in order to preserve it, e.g. echo “$ten”
create an alias
alias ds=’cd ~/Dropbox’
remove an alias
unalias ds
temporarily ignore an alias
\ls (simply escape with backslash)
