https://crteknologies.fr/wiki/ 2026-04-25T09:23:37+00:00 https://crteknologies.fr/wiki/ https://crteknologies.fr/wiki/lib/tpl/arctic/images/favicon.ico text/html 2026-04-24T22:23:06+00:00 cyril (cyril@undisclosed.example.com) https://crteknologies.fr/wiki/software:files?rev=1777069386&do=diff Files management Partitioning Cheatsheet for preparing and a new disk and using it with: * LVM (Logical Volume Manager) * Principle: physical volumes (hardware) are merged into volume groups, and then split back into logical volumes, which can be used as a partition (or as a disk with a partition table, but not very useful?). text/html 2025-01-07T22:49:58+00:00 cyril (cyril@undisclosed.example.com) https://crteknologies.fr/wiki/software:pdf?rev=1736290198&do=diff PDF management GS Merge PDF files: gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -sOutputFile=finished.pdf file1.pdf file2.pdf Split PDF file: gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -dFirstPage=m -dLastPage=n -sOutputFile=out.pdf in.pdf Compress PDF file containing images ( text/html 2024-12-11T09:40:52+00:00 cyril (cyril@undisclosed.example.com) https://crteknologies.fr/wiki/linux:shell?rev=1733910052&do=diff Shell Block comment With “END” being just an example of any random string that must not appear in the commented section: : << 'END' sleep 1 END Iterate over a list as a string Different options: # option 1, without variable for x in a b c; do echo $x; done # option 2, with string list="a b c" for x in $list; do echo $x; done # only works with sh and bash for x in ${=list}; do echo $x; done # only works with zsh for x in $(echo $list}; do echo $x; done # works with any shel… text/html 2024-11-06T22:20:14+00:00 cyril (cyril@undisclosed.example.com) https://crteknologies.fr/wiki/software:git?rev=1730931614&do=diff GIT For a quick memo about different Source Code Management software, see software:scm. Introduction Git is a source code version control system. Unlike Subversion (SVN) and CVS it is distributed, so it allows better local source code management (you can commit, branch and so on on your local repository before pushing it on the public repository; you can also never push it on any public repository). text/html 2024-05-12T22:48:57+00:00 cyril (cyril@undisclosed.example.com) https://crteknologies.fr/wiki/software:video?rev=1715554137&do=diff Multimedia encoding Images convert size operations * resize: scale image convert in.png -resize 640x480 out.png * crop: crop image convert in.png -crop 640x480+10+10 out.png * extent: add margins or crops convert in.png -gravity center -extent 1420x1420 out.png convert in.png -extent 1420x1420-10-10 out.png text/html 2011-01-21T03:08:25+00:00 cyril (cyril@undisclosed.example.com) https://crteknologies.fr/wiki/?image=software%3Awhovisited.pm.txt&ns=software&rev=1295579305&tab_details=history&mediado=diff&do=media