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📊 Linux Process Management

This section covers commands used to monitor, manage, and control processes in Linux systems.

🔍 View Processes

Command	Usage & Options
`ps aux`	Show all running processes; `a` → all users, `u` → detailed format, `x` → background processes
`top`	Real-time process monitoring
`htop`	Interactive process viewer (if installed)

🧠 Process Details

Command	Usage & Options
`ps -ef`	Full process listing; `-e` → all processes, `-f` → full format
`pidof nginx`	Get PID of a process
`pgrep nginx`	Find process ID by name

❌ Kill Processes

Command	Usage & Options
`kill PID`	Terminate process gracefully
`kill -9 PID`	Force kill process; `-9` → SIGKILL
`pkill nginx`	Kill process by name

⚙️ Process Priority

Command	Usage & Options
`nice -n 10 command`	Start process with priority; `-n` → niceness value
`renice 10 PID`	Change priority of running process

🔄 Background Jobs

Command	Usage & Options
`command &`	Run process in background
`jobs`	List background jobs
`fg`	Bring job to foreground
`bg`	Resume job in background

🔥 Useful Example

Command	Usage & Options
`ps aux \| grep apache`	Find Apache process
`kill -9 1234`	Force kill process with PID 1234
`top`	Monitor CPU & memory usage

🎯 Summary

Use ps, top, htop to monitor processes
Use kill, pkill to stop processes
Manage priority using nice and renice
Background jobs help manage long-running tasks