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Linux:Processes

Process Management

Kivonat: ps, pstree, pgrep, top, htop, kill, killall, slay, at, atq, atrm, crontab, nice, renice, time, & killall, nohup, free
  • What processes are running on the system?
  • Display the list of running processes in a tree layout.
  • Which processes are currently running on the system owned by root?
  • What is the process id of the process named init?
  • Log in over another terminal and run the program named mc.
  • In the other Putty window, find the process id of this Midnight Commander, then send it a TERM signal! (In the solution, your login name is <username>, the process id read is <PID>).
  • Terminate all your processes with one command!
  • Display the list of running processes by load! Monitor the load of the system continuously!
  • Find all files with .conf extension on the system and list them in /tmp/find-<username>.txt! Since this takes a long time to run, do the search in the background!
  • Perform the previous task without displaying error messages!
  • Re-run the previous working with low priority!
  • Run the previous task at 3:10 every night! (No need to run in background & signal in this case. Don't forget to clear this setting when you are done with the task!)
  • Exactly at midnight, write the amount of free space in /tmp/free-<username>.txt!
  • Display a list of your scheduled tasks!
  • At 10AM, make a copy of the /etc/passwd file to the tmp directory.
  • Cancel the scheduled task that has been just created. (In the solution, the id of the scheduled task is marked <JOBID>.)
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