Commands by T4b

Commands by T4b (4)

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Find where a kind of file is stored

In this case searches for where .desktop files are stored. The resulted is a sorted list of the top directories containing such files. Show Sample Output
This is sample output - yours may be different.
```
      1 ./usr/share/wayland-sessions/
      2 ./usr/share/gdm/greeter/autostart/
      3 ./usr/share/desktop-base/
      4 ./usr/lib/gnome-settings-daemon-3.0/gtk-modules/
      4 ./usr/share/xsessions/
      7 ./usr/share/gnome/applications/
      8 ./usr/lib/libreoffice/share/xdg/
     22 ./etc/xdg/autostart/
     45 ./usr/share/mimelnk/application/
    161 ./usr/share/applications/
```
2

find . -name '*.desktop' | sed s/[^/]*\.desktop$// | uniq -c | sort -g

T4b · 2016-09-16 12:22:38 21
Vectorize xkcd strips

Uses ImageMagick and potrace to vectorize the input image, with parameters optimized for xkcd-like pictures.
This is sample output - yours may be different.
1

f=correlation.png; s=400; t=50; a=1.2; convert $f -resize ${s}% -threshold ${t}% bmp:- | potrace -o ${f%.*}.svg -b svg -z black --fillcolor "#FFFFFF" --alphamax ${a}

T4b · 2016-07-25 10:45:28 46
Takes and displays screenshot of Android phone over adb.

Dependencies on phone: adb access, screencap command, base64 command. Dependencies on computer: adb, sed, base64, display (from imagemagick, but can substitute other image viewer which reads from stdin). This should work around adb stupidies (i.e. that it replaces \n with \r\n) with base64.
This is sample output - yours may be different.
4

adb shell "screencap -p | base64" | sed 's/\r$//' | base64 -d | display

T4b · 2016-02-07 18:46:35 19
Replace nelines with spaces
This is sample output - yours may be different.
0

sed -e :a -e '$!N;s/\n/ /;ta'

T4b · 2012-08-21 09:45:16 6

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Maximum PNG compression with optipng, advpng, and advdef

optipng and advancecomp (for the the advpng and advdef tools) are the best FOSS tools for losslessly compressing PNGs. With the above tool chain, you can cut off as much as 20% off a PNG's file size.

Remove security limitations from PDF documents using ghostscript (for Windows)

#4345 also works under windows

Patator: A Hydra brute force alternative

Convert CSV to JSON

Replace 'csv_file.csv' with your filename.

Send an http HEAD request w/curl

Advanced python tracing

Trace python statement execution and syscalls invoked during that simultaneously

Stream your desktop to a remote machine.

This allows you to stream your desktop using vlc to another computer, in this case, 192.168.1.2 on your local network. If you have vlc installed, your all set to try this out. To view your own desktop, just run "vlc screen://" For more info, see http://nerdlogger.com/2008/01/08/stream-your-linuxwindowsmac-desktop-as-video-using-vlc/

list block devices

Shows all block devices in a tree with descruptions of what they are.

Batch convert files to utf-8

taken from http://blog.ofirpicazo.com/linux/batch-convert-files-to-utf-8/

Convert seconds to [DD:][HH:]MM:SS

Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

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Commands by T4b (4)

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