Shell (Linux)

Shell Cheat Sheet

File & Folder Operations

Delete a directory:rm -r directory

Delete file:rm FILETODELETE

New directory:mkdir FOLDERNAME

Copy file:cp SOURCE DEST

Copy folder:cp -avr SOURCE DEST

Watch file:less +F YOUR.LOG

Move/Rename folder:mv OLD NEW

CURL

Download file:curl -O URLHERE

Zipping & Uzipping

Unzip:unzip FILENAME.ZIP

Untar & Gzip:tar -xzf FILENAME.TAR.GZ

Ungzip: gzip -d FILENAME.GZ

Zip folder:zip -er DESTINATION.ZIP FOLDER

Processes

Kill process:kill -9 PROCESSID

Kill process on port: kill $(lsof -t -i:PORT_HERE)

Find process:ps -ef | grep PROCESS NAME

Process list:ps aux

Root process list:ps -u root

Check memory usage in megabytes:free -m

List of ports in use: sudo lsof -i -P -n

Permissions

Set all new files and folders to inherit the group of the current folder: $ chmod -R g+s somefolder