Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Programming
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Databases
Mail Systems
openSolaris
Eclipse Documentation
Techotopia.com
Virtuatopia.com

How To Guides
Virtualization
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Windows
Problem Solutions

  




 

 

Appendix J. History Commands

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:

  1. history

  2. fc

bash$ history
   1  mount /mnt/cdrom
    2  cd /mnt/cdrom
    3  ls
     ...
	      

Internal variables associated with Bash history commands:

  1. $HISTCMD

  2. $HISTCONTROL

  3. $HISTIGNORE

  4. $HISTFILE

  5. $HISTFILESIZE

  6. $HISTSIZE

  7. $HISTTIMEFORMAT (Bash, ver. 3.0 or later)

  8. !!

  9. !$

  10. !#

  11. !N

  12. !-N

  13. !STRING

  14. !?STRING?

  15. ^STRING^string^

Unfortunately, the Bash history tools find no use in scripting.
#!/bin/bash
# history.sh
# Attempt to use 'history' command in a script.

history

# Script produces no output.
# History commands do not work within a script.

bash$ ./history.sh
(no output)	      
	      

The Advancing in the Bash Shell site gives a good introduction to the use of history commands in Bash.

 
 
  Published under the terms of the GNU General Public License Design by Interspire