Copy files securely: rsync -auvP <origin> <destination>
zip: zip <name.zip> <file to be zipped> , zip -r <name.zip> <directory to be zipped>
unzip: unzip <.zip> <optional directory to unzip to>
list: ls -l shows detail. ls -S sorts by size. ls <directory> lets you peek side a directory
check file / folder size: du -sh <directory_name>
Print Working Directory: pws tells you where you're at
Shutdown: sudo shutdown -h now
Restart: sudo shutdown -r now
chown:
Make a file executable: chmod 755 <script.sh>
Copy files between local and remote: scp ~/rebels.txt dvader@deathstar.com:~/revenge
Copy all files from current directory into a remote location: scp -r ./* dvader@deathstar.com:~/revenge
ssh: ssh pi@192.168.3.8
To restart an apache server, so that configs could apply: sudo service apache2 restart
To apply config for NGINX: service nginx reload
or on Windows: nginx -s reload
Convert between media formats: ffmpeg -i <input> <output>
Bulk convert avi to mp4: for i in *.avi; do ffmpeg -i "$i" "${i%.*}.mp4"; done
Generate gif from video:
ffmpeg -ss <start second> -t <capture length in second> -i <video file> -vf "fps=20,scale=640:-1:flags=lanczos,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse" -loop 0 output.gif
This captures a 20 fps gif of 640 width (height is auto, preserving aspect ratio). -ss for starting second, -t for length of gif in second.
You can make commands execute one after another with &&. For example, cd project && git status would change directory to the project folder, then display git repo status. A cool way to use this is to alert you when a long-running process has finished, by chaining something like printf \\a (print a "bell" character, which makes the computer beep), or say "Process finished." (this only works on mac).
There's also || which only executes a command if the previous one fails. For example, git clone <some huge repo> || say "Download failed" would alert you if the repo couldn't be downloaded.
Combining these two, you can even make it alert you for either success or failure.
git clone <repo url> && say "Download successful" || say "Download failed"
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