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Commands

ssh pi@raspberrypi.local

To search string inside filles of a given folder
grep -rl "string" /path

To get size of all folders inside a folder ->  du -sh */

git swtch remote branch if its not getting downloaded
https://stackoverflow.com/questions/2294313/how-to-download-a-branch-with-git
git checkout -t origin/branch-name

copy file to server using scp (if it has pem file)
scp -i mykey.pem somefile.txt root@my.ec2.id.amazonaws.com:/

Kill a process on a port ubuntu
down voteaccepted
You want to use backtick not regular tick:
sudo kill `sudo lsof -t -i:9001`
If that doesn't work you could also use $() for command interpolation:
sudo kill $(sudo lsof -t -i:9001)

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