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usefullcommands.md

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mess up mp4 exif

exiftool -ALL= /path/to/input.mp4
ffmpeg -i /path/to/input.mp4 -map 0 -map_metadata -1 -c copy /path/to/export.mp4

split mp4 in kb defined parts

mp4box -splits 2000000 filename.mp4 e.g. ~2 GB parts

exports git commit list (all) into a csv format

  • git log --pretty=format:'"%h","%an","%ad","%s"' --date-order --date=format:'%d.%m.%Y %H:%M:%S' > allCommits.csv

Flatten PDFs

  • convert -density 300 "in.pdf" "out.pdf"
  • convert -density 120x120 -quality 20 -compress jpeg <in> <out>
  • gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/screen -dNOPAUSE -dQUIET -dBATCH -sOutputFile=output.pdf input.pdf

Docx -> PDF

  • soffice --headless --convert-to pdf docx/* pdf/

clean disk space

if pacman and journalctl:

pacman -Sc
pacman -Qdt
pacman -Rns $(pacman -Qtdq)
journalctl --vacuum-size=50M

if apt and jctl

apt-get clean
journalctl --vacuum-size=50M

find large files

find / -xdev -type f -size +100M

taken from maketecheasier.com

remove old snaps

#!/bin/bash
# Removes old revisions of snaps
# CLOSE ALL SNAPS BEFORE RUNNING THIS
set -eu

LANG=en_US.UTF-8 snap list --all | awk '/disabled/{print $1, $3}' |
    while read snapname revision; do
        snap remove "$snapname" --revision="$revision"
    done

taken from linuxuprising.com

GIT Commands

Show Last modified files (only names)

git show --pretty="" --name-only

Show Last modified files (names + content)

git show

Show git history

git log

7z

Max compression

7z a archive.7z *.jpg -mx9

Unzip

7z x archive.7z

Alpine

Reinstall all apks

apk info | xargs sudo apk fix source: https://unix.stackexchange.com/a/619479

List installedp acks

apk info

List available packs

apk list