Linux Command Line Essentials

The command line is an indispensable tool for developers. Whether you're managing servers, automating tasks, or navigating your filesystem, knowing your way around the terminal will make you significantly more productive.

Navigation

pwd          # print working directory
ls -la       # list all files with details
cd /path     # change directory
mkdir mydir  # create directory

File Operations

cp src dest  # copy
mv src dest  # move / rename
rm -rf dir   # remove recursively
cat file     # view file contents
grep -r "term" . # search recursively

Process Management

ps aux       # list processes
kill -9 PID  # force kill process
top          # real-time process monitor
&              # run in background

Networking

curl -I url  # fetch HTTP headers
wget url     # download file
netstat -tuln # show listening ports
ssh user@host # connect via SSH