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shun

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System Operations in Linux

#linux

Performing system operations is a crucial part of managing a Linux system. Here are some essential commands for handling

System Operations in Linux

ps: Display currently active processes

  • Basic usage: 
  $ ps
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  • Show all processes for all users: 
  $ ps aux
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top: Real-time Process Monitoring

  • Basic usage: 
  $ top
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  • Some key commands while top is running:
    • q: Quit top
    • u: Show processes for a specific user
    • k: Kill a specific process

kill: Terminate Processes

  • Basic usage (using process ID): 
  $ kill [process_id]
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  • Send a specific signal to a process (e.g., sending the SIGKILL signal): 
  $ kill -[signal] [process_id]
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For example, to send the SIGKILL signal:

```bash
$ kill -9 [process_id]
```
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shutdown: Shutdown or restart the system

  • Shutdown immediately: 
  $ shutdown -h now
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  • Reboot immediately: 
  $ shutdown -r now
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  • Shutdown with a message: 
  $ shutdown -h +10 "System will shutdown in 10 minutes"
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This will shut down the system in 10 minutes and broadcast the provided message to all logged-in users.

Understanding these system operation commands is essential for effectively managing and maintaining a Linux system.

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