Useful Linux Commands

1. Find out what disks are attached to a linux box
sudo lshw -class disk

2. top – Process Activity Command
The top program provides a dynamic real-time view of a running system i.e. actual process activity. By default, it displays the most CPU-intensive tasks running on the server and updates the list every five seconds.

3. ps – Displays The Processes
ps command will report a snapshot of the current processes.

  • Print All Process On The Server
    ps ax
    ps axu
  • Print Security Information
    ps -eo euser,ruser,suser,fuser,f,comm,label
    ps axZ
    ps -eM
  • Find Out The Top 10 Memory Consuming Process
    ps -auxf | sort -nr -k 4 | head -10
  • Find Out top 10 CPU Consuming Process
    ps -auxf | sort -nr -k 3 | head -10

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