Linux
Info
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How to get the OS version
lsb_release -a uname -a cat /etc/os-release
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How to redirect error output to a file
command 2> error.log -
How to restart a server from another server
ssh -t username@server.com 'sudo reboot'
Archiving
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How to arcchive a folder
tar -czvf ARCHIVE.tar.gz /path/to/folder/to/archive -
How to unarchive a tar.gz file
tar -xvf ARCHIVE.tar.gz
Searching
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How to find specific files recursively
find . -name ".DS_Store" -type f -
How to delete specific files recursively
find . -name ".DS_Store" -type f -delete -
How to count the number of files with an extension
find . -type f -name "*.java" | wc -l -
How to search recursively with grep
grep -r --include "*.java" "SEARCH TEXT" .
Media
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How to convert a PNG image to WebP with 80% quality
cwebp -q 80 INPUT.png -o OUTPUT.webp -
How to convert a MOV video to MP4
ffmpeg -i INPUT.mov -c:v copy -c:a copy OUTPUT.mp4