bash tips

bash_tips.sh

# last command
!!

# last command beginning with xyz
!xyz

# print rather than excuting last command
!!:p

# the end of previous command
!$

# All of the arguments of the previous command
!*

# fix typo
mroe filename # wrong
^ro^or # trun into more filename
^error^correction

# brace expression
touch a{1,2,3}b # touch a1b a2b a3b

# Remove a trailing file name component, leaving only the head.
:h

# Remove all leading file name components, leaving the tail.
:t

# Remove a trailing suffix of the form .xxx, leaving the basename.
:r

# Remove all but the trailing suffix.
:e

# Substitution
:s