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dus is meant to have better output than GNU du -s, which simply summarized the current directorys size (recursively), and bar chart for visualization of sizes.

Watch this video for more usages

It has quite a few of options to use, watch this video for examples of some of them:

You can also pipe in list of directories or files to dus, it reads from standard input as well and gives you the output you want.

dus was created by Rikard Johansson on 2015-10-16, written in C++14 under GPLv3, currently v0.0.6 (2015-12-18).

I am sure many of you know of Ncdu (NCurses Disk Usage, video), but I found tdu (GitHub, video) is a simpler option, and frankly, I like it better.

It uses the output of du, parses and renders out a tree or outline as seen below.

You can sort by size, name, number of descendants, or unordered as from du, toggle on the numbers of descendants, switch to ASCII line-drawing as seen on the right of the screenshot above.

Its not fancy, thats clear, but the tree or the outline representation gives you a better sense of how space is used. Only if it can has bar charts to display the size and the amount of descendants, tdu would be the perfect disk usage visualizer in my opinion.

tdu was created in 2004 by Darren Stuart Embry, written in C under the GPLv2, last verison 0.0.20121127 was nearly three years ago. There is also a Perl version.

This is a note for some use cases of xsnap, which I never can remember how to use them, exactly, even after five years.

-file "$HOME/tmp/ss/$(date +'%Y-%m-%d--%H:%M:%S.png')"

xsnap -region 1280x720+2+20 -file screenshot.png

xsnap -file screenshot.png -region "$(xwininfo -root | sed '/\(Width\|Height\)/ {s/[ :a-z-]//gi;p} ; d' | tr '\n' ' ' | cut -d ' ' -f1-2 | tr ' ' 'x')+0+0"

xsnap -file screenshot.png -region "$(xwininfo -root |
  sed '/\(Width\|Height\)/ {s/[ :a-z-]//gi;p} ; d' |
  tr '\n' ' ' |
  cut -d ' ' -f1-2 |
  tr ' ' 'x')+0+0"

Have you ever read cds manpage? If you havent, then you should if you dont even know what cd or cd - does. The manpage is of POSIX Programmers Manual, so the content is not only for the Bash, but for every POSIX-compliant shell.

/path/somewhere $ cd
~ $

~ $ cd /path/to/somewhere/deep
/path/to/somewhere/deep $ # do somegthing
/path/to/somewhere/deep $ cd /path/to/other/place/way/way/deep
/path/to/other/place/way/way/deep $ # do something
/path/to/other/place/way/way/deep $ cd -
/path/to/somewhere/deep $ # now we are back
/path/to/somewhere/deep $ cd -
/path/to/other/place/way/way/deep $ # we are back to the other

~ $ mkdir foobar
~ $ CDPATH=$HOME
~ $ cd /
/ $ cd foobar
/home/login/foobar $ # bang!

~ $ mkdir long/long/directory
~ $ cd !$
~/long/long/directory $

This is probably my own oldest script and still being used besides .bashrc.

This g script was born at 2007-12-26T03:01:29+0800. (Yep, I am a timestamping nuts) Four years ago, I wrote a post about how to use it, but I doubt anyone has ever wanted to use it.

Its a simple script for quickly switching working directory. You can switch with index or keyword, it also supports Bash completion. There are a lot of script like this around, but I am happy with mine, even it had some issues.

After these years, I finally updated it to adding keyword support which I always wanted. I used to memorize the indexes of those directories, it wasnt a big issue for me. Besides that, a Makefile was written for easy installation.

Other than fixing some syntax and weird scripting (still read weird), its basically the same as you read in that old blog post.

If you havent tried directory switcher, why not try mine and create some issues for me to fix? (I am sure there are plenty to fix)

In my Fluxbox keys, I have three keys to take different kind of screenshots using scrot, whole screen, window, and window with window manager decoration aka window border. If I only need a portion of screen, I would grab the whole screen, then use GIMP to crop it; or I will use GIMP to grab screenshot.

Recently, I started to looking for a note taking program and I chose KeepNote. It has a hotkey Ctrl+Insert to insert a screenshot from an external command, I think its very interesting and useful function to me. The default command is ImageMagicks import. For some unknown reason, it always gave me an all black screenshot if I select normal windows area, but Fluxboxs toolbar can be grabbed correctly and I could have correct screenshot if I run import from a shell.

Of course, I could always make a screenshot, then import it into KeepNote, but that seems to take too much efforts.

So, I found a program called xsnap, I am using version 1.5.6. It supports window (mouse middle button click) and region grab (drag a region). It doesnt accept a filename by default, a simple shell script for KeepNote to do the job:

xsnap -png -file "$1"

I also specify the format, though PNG is the default format.

I think its also the time to let scrot get retired in my Fluxbox keys:

None Print :Exec xsnap -file "$HOME/tmp/ss/$(date +'%Y-%m-%d--%H:%M:%S.png')"

The old ones using scrot:

None Print Print :Exec scrot '%Y-%m-%d--%H:%M:%S_$wx$h.png' -e 'mv $f ~/tmp/ss'
None Print S :Exec scrot -s -d 1 '%Y-%m-%d--%H:%M:%S_$wx$h.png' -e 'mv $f ~/tmp/ss'
None Print B :Exec scrot -s -b -d 1 '%Y-%m-%d--%H:%M:%S_$wx$h.png' -e 'mv $f ~/tmp/ss'