ctrl + R
bang !
sudo ! ⇒ history
timestamp
exit number
![command number]
![relative eg. -2]
![last command start with]
eg:
!-1:0 > last command > argument zero
!-1:^ > last command > first argument
!-1:$ > last command > last argument
!!:1:h > last command > argument one > head
h > head
t > tail
r >
e >
p >
q > qoute
modifier
!!:1:s/png/jpg
bashrc
echo $? ⇒ exit code last command (0 if ok)
nethogs eth0