DirB, Directory Bookmarks for Bash
Imagine browsing the Web and having to type the full Uniform Resource Identifier (URI) path each time you visit a Web page—painful. However, since 1993, when browser bookmarks were added to the Mosaic browser, they have made short work of returning to sites you go to often (see en.wikipedia.org/wiki/Internet_bookmark). Regardless of whether you call them “Bookmarks”, “Favorites”, “Hotlists” or “Internet Shortcuts”, they are great time-savers.
As a developer of consumer product software, I frequently work concurrently in multiple directory trees. I often bounce between the source code directories for each of my active development products, the directories that hold vendor documentation, and my desktop (where I keep all my active but as-of-yet unfiled work). I used to open a separate xterm window for each active directory, but mousing between the various windows and keeping track of which window had what directory was tedious and error-prone.
If command-line bookmarks existed, they would transport me to often-visited directories with a few keystrokes. Of course, the Linux change directory command (cd) comes with one built-in shortcut: the one to go to your home directory. To go home, I need to enter only the cd command without an argument. It's even easier than clicking the heels of my ruby slippers (which is not an unrelated reference to a popular scripting language, but instead a spurious reference to The Wizard of Oz). But, this is where the convenience ends.
I created Directory Bookmarks (DirB, pronounced “derby”) to extend the concept of bookmarks to the command line and to move between directories quickly. DirB is implemented as a set of Bash shell functions and consists of a few simple commands:
s — save a directory bookmark.
g — go to a bookmark or named directory.
p — push bookmark/directory onto dir stack.
r — remove a saved bookmark.
d — display a bookmarked directory path.
sl — print the list of directory bookmarks.
These commands can be used alongside the usual Bash commands: cd, pushd and popd.
As you will see, DirB means fewer keystrokes and greater productivity. Now, I (almost) never leave home without it.
If DirB's function names conflict with commands or aliases that you already use, change the names of the offending functions in the .bashDirB file to ones that work for you.
To install DirB, download the source file .bashDirB from www.DirB.info/bashDirB, and save it as ~/.bashDirB to your home directory. Then, edit your ~/.bashrc file and include the following in the file:
Each new Bash session now will have the power of DirB. If you use the DirB commands within the ~/.bashrc file, place the source line above where the DirB commands are used. I find that placing this near the top of the file works for me.
After installing DirB, open a new xterm window and follow along with the rest of this article.
DirB comes with a small bonus. When working in multiple windows at the same time, I find it handy to have each xterm window display the current directory's name in its title bar. To accomplish this, the .bashDirB file sets up the primary Bash shell prompt, $PS1, to output an escape sequence. This string then will be output as part of the command-line prompt, and the X11 windowing software will respond to the escape sequence by updating the xterm window's title bar. If you are not using X11, or if this behavior is not desired, edit ~/.bashDirB and insert a pound sign (#) in front of the PS1= on line 18 of the file to comment out that feature.
The desktop is one of my most common destinations. I saved a bookmark for my desktop by going there and then entering an s command:
% cd ~/Desktop % s d
(Note that the % represents the shell's command-line prompt and is not typed as part of the command.) The second line above creates a new bookmark named d.
Wherever I am, I now can go to my desktop with the g command:
% cd /tmp # go somewhere % pwd /tmp % g d # go to the desktop % pwd /home/Desktop
|Using Salt Stack and Vagrant for Drupal Development||May 20, 2013|
|Making Linux and Android Get Along (It's Not as Hard as It Sounds)||May 16, 2013|
|Drupal Is a Framework: Why Everyone Needs to Understand This||May 15, 2013|
|Home, My Backup Data Center||May 13, 2013|
|Non-Linux FOSS: Seashore||May 10, 2013|
|Trying to Tame the Tablet||May 08, 2013|
- Using Salt Stack and Vagrant for Drupal Development
- Making Linux and Android Get Along (It's Not as Hard as It Sounds)
- New Products
- Validate an E-Mail Address with PHP, the Right Way
- Drupal Is a Framework: Why Everyone Needs to Understand This
- A Topic for Discussion - Open Source Feature-Richness?
- New Products
- Home, My Backup Data Center
- The Pari Package On Linux
- Developer Poll
- This is the easiest tutorial
5 hours 29 min ago
- Ahh, the Koolaid.
11 hours 7 min ago
- git-annex assistant
17 hours 7 min ago
- direct cable connection
17 hours 29 min ago
- Agreed on AirDroid. With my
17 hours 40 min ago
- I just learned this
17 hours 44 min ago
18 hours 14 min ago
- not living upto the mobile revolution
21 hours 5 min ago
- Deceptive Advertising and
21 hours 41 min ago
- Let\'s declare that you have
21 hours 42 min ago
Enter to Win an Adafruit Prototyping Pi Plate Kit for Raspberry Pi
It's Raspberry Pi month at Linux Journal. Each week in May, Adafruit will be giving away a Pi-related prize to a lucky, randomly drawn LJ reader. Winners will be announced weekly.
Fill out the fields below to enter to win this week's prize-- a Prototyping Pi Plate Kit for Raspberry Pi.
Congratulations to our winners so far:
- 5-8-13, Pi Starter Pack: Jack Davis
- 5-15-13, Pi Model B 512MB RAM: Patrick Dunn
- Next winner announced on 5-21-13!
Free Webinar: Linux Backup and Recovery
Most companies incorporate backup procedures for critical data, which can be restored quickly if a loss occurs. However, fewer companies are prepared for catastrophic system failures, in which they lose all data, the entire operating system, applications, settings, patches and more, reducing their system(s) to “bare metal.” After all, before data can be restored to a system, there must be a system to restore it to.
In this one hour webinar, learn how to enhance your existing backup strategies for better disaster recovery preparedness using Storix System Backup Administrator (SBAdmin), a highly flexible bare-metal recovery solution for UNIX and Linux systems.