Recalling command history - Bash Shell
Recalling command history:
!! - Last command and all arguments
!-3 - Third-to-last command and all arguments
!^ - First argument of last command
!:3 - Third argument of last command
!$ - Last argument of last command
!* - All arguments of the last command
!30 - Expands to the 30th command in history
!find - Last command beginning with 'find'
!?find - Last command containing 'find'
^name^type - Last command with first instance of 'name' replaced with 'type
!:gs/name/type - Last command with all instances of 'name' replaced with 'type'
<command>:p - Don't execute and print command.
Command to trim the Whitespace:
echo -e "Here is the command to trim \n \n White space" | /usr/bin/tr -d '[:space:]'
!! - Last command and all arguments
!-3 - Third-to-last command and all arguments
!^ - First argument of last command
!:3 - Third argument of last command
!$ - Last argument of last command
!* - All arguments of the last command
!30 - Expands to the 30th command in history
!find - Last command beginning with 'find'
!?find - Last command containing 'find'
^name^type - Last command with first instance of 'name' replaced with 'type
!:gs/name/type - Last command with all instances of 'name' replaced with 'type'
<command>:p - Don't execute and print command.
Command to trim the Whitespace:
echo -e "Here is the command to trim \n \n White space" | /usr/bin/tr -d '[:space:]'
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