Short IT recipes

i.e. some stuff and junk about Python, Perl, Matlab, Ruby, Mac X, Linux, Solaris, ...

Saturday, February 25, 2017

Linux: show open ports

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sudo netstat -plnt
Sunday, February 19, 2017

youtube-dl: download music playlist as mp3

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youtube-dl --extract-audio --audio-format mp3
Tuesday, February 14, 2017

Imagemagick: bash split large images into smaller

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for f in *.tiff ; do fbase=`echo $f | cut -d '.' -f 1`; echo $fbase; convert -crop 510x510 +repage $f sub/${fbase}_%02d.tiff ; done
Thursday, February 09, 2017

Matlab: Set default figure position

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set(0,'defaultfigureposition',[100 630 560 420])
Sunday, January 22, 2017

MATLAB: Run using xfce4 launcher without termianl window

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Add -desktop parameter, e.g., /opt/MATLAB/R2016a/bin/matlab -desktop
Friday, January 20, 2017

Git: restore delete file

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git checkout ^ --
Monday, January 16, 2017

MPV: Check twitch stream quality and specify one

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Get stream format codes and avaliable resolutions youtube-dl -F https://www.twitch.tv/burkeblack Gives, e.g.: [twitch:stream] burkeblack:...
Sunday, January 15, 2017

MPV: Play youtube playlist with shuffle and repeat (i.e. loop)

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mpv -no-video --shuffle --loop https://www.youtube.com/playlist?list=PL55713C70BA91BD6E
Wednesday, January 11, 2017

Imagemagick: Conver multiple pdf into image so that all pages are in one file for each pdf

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mogrify -append -format png -density 200 -alpha remove *.pdf

Libreoffice: Batch convert word files (docx) to pdf

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soffice --headless -convert-to pdf *.docx --outdir some_output_folder
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