The Bash shell provides command-line tools for editing and manipulating a user's command history. This is primarily a convenience, a means of saving keystrokes.
Bash history commands:
history
fc
bash$ history
1 mount /mnt/cdrom
2 cd /mnt/cdrom
3 ls
...
|
Internal variables associated with Bash history commands:
$HISTCMD
$HISTCONTROL
$HISTIGNORE
$HISTFILE
$HISTFILESIZE
$HISTSIZE
!!
!$
!#
!N
!-N
!STRING
!?STRING?
^STRING^string^
Unfortunately, the Bash history tools find no use in scripting.
1 #!/bin/bash 2 # history.sh 3 # Attempt to use 'history' command in a script. 4 5 history 6 7 # Script produces no output. 8 # History commands do not work within a script. |
bash$ ./history.sh (no output) |