Processes Lab Post: 302778209

Sponsored Content

Homework and Emergencies Homework & Coursework Questions Processes Lab Post 302778209 by bakunin on Sunday 10th of March 2013 05:17:17 AM

03-10-2013

Registered User

Your solutions are correct to the point that they are working. The following is just a bit of additional information you might find useful. I noticed, that you have no solution for question 2.7, probably an oversight?

RudiC is correct: "kill -9" means the OS actively terminates the process. "kill -15" on the other hand tells the process to shut down immediately. In your case this will not make that much difference, but if a process has open temporary files or logs to be written, or any other allocated resources, "kill -15" will allow it to neatly close all these before exiting while "kill -9" will leave all these open and hanging in limbo.

I don't know which shell you use, but most probably it is either bash or ksh. In both cases you can make use of the job control of this shell: issue "jobs" to see a list of jobs in the background and use "kill %<number>" instead of "kill <PID>" to address the process.

The "kill" command can take a list of PIDs to process. Instead of

Code:

kill -9 <PID1>
kill -9 <PID2>
kill -9 <PID3>
...

it is posssible to write

Code:

kill -9 <PID1> <PID2> <PID3> ...

I hope this helps.

bakunin

This User Gave Thanks to bakunin For This Post:

bakunin

View Public Profile for bakunin

Find all posts by bakunin

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

VMWare Workstation for home lab

I was wondering if anyone has used VMWare Workstation? I wanted to practice and learn Unix in a networking environment and have my own home lab. However room and money prevent me from buying several computers to do so. Any input would help thank you.

2. Programming

Shell Script Lab

In the following Shell Script can anyone help me? What are the total scripts? What are the total binaries? What are the total files? #!/bin/sh GREP="/bin/grep -q" if ; then if ; then for | in ${I}/* ;do file ${I} | ${GREP} "executable" && echo "${I} is a binary" file ${I} |...

3. Shell Programming and Scripting

cant complete lab ???

heres the lab i did everything but when i issue the automated lab check. but it gives me this everytime ''you are missing the /home/smichaels/Labs/lab2b/group file, please create it as per step 12 of the lab. once you have corrected this problem, re-run the uli101.023 program'' im...

4. Homework & Coursework Questions

Help completing lab.

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted! 1. The problem statement, all variables and given/known data: ''you are missing the /home/smichaels/Labs/lab2b/group file, please create it as per step 12 of the lab. once...

5. Homework & Coursework Questions

shell scripting while loop lab 15 help

hi.. this is shell scripting lab15.sh i dont understand this lab i am at the screen shot part. i was wondering if someone can take a quick look at this lab i have linked the doc below. i dont know where to start i have did the Required Errorlevels Errorlevel # but dont...

6. Shell Programming and Scripting

help me with lab im new to bash....

Write a script that copies the file tree (including subdirectories) in your home directory. As the initial directory to take the directory / usr / share / doc, as the destination directory using the directory $ {HOME} / doc. Write a script corresponding to paragraph 1. Additional conditions: a)...

7. Hardware

Electricity Savings for home lab

So, I have a kindof off the wall question. I've got 10 computers which I inherited from a charter school that closed that I did their admin work for. They're not servers, just workstations with ubuntu server running on them. I had them all up and running at one point... but crimineys the load on my...

8. Homework & Coursework Questions

Lab ^

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted! 1. The problem statement, all variables and given/known data: Filter a file for lines that have exactly 5 numbers in a row. 2. Relevant commands, code, scripts,...

9. Homework & Coursework Questions

System Admin. Lab

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted! 1. The problem statement, all variables and given/known data: Create a group id with your last name. Create 2 user IDs using your last name and the numbers 1 and 2. For each...

10. Hardware

Lab server organized software

Hello, Do you have any suggestion of any tool (web based preferably) about how to organize a lab environment? Now i save some info in excel sheet (one rack per column) , but i was thinking if any software exists. Thanks in advance!

LEARN ABOUT MOJAVE

kill

KILL(1) 						    BSD General Commands Manual 						   KILL(1)

NAME

     kill -- terminate or signal a process

SYNOPSIS

     kill [-s signal_name] pid ...
     kill -l [exit_status]
     kill -signal_name pid ...
     kill -signal_number pid ...

DESCRIPTION

     The kill utility sends a signal to the processes specified by the pid operands.

     Only the super-user may send signals to other users' processes.

     The options are as follows:

     -s signal_name
	     A symbolic signal name specifying the signal to be sent instead of the default TERM.

     -l [exit_status]
	     If no operand is given, list the signal names; otherwise, write the signal name corresponding to exit_status.

     -signal_name
	     A symbolic signal name specifying the signal to be sent instead of the default TERM.

     -signal_number
	     A non-negative decimal integer, specifying the signal to be sent instead of the default TERM.

     The following PIDs have special meanings:

     -1      If superuser, broadcast the signal to all processes; otherwise broadcast to all processes belonging to the user.

     Some of the more commonly used signals:

     1	     HUP (hang up)
     2	     INT (interrupt)
     3	     QUIT (quit)
     6	     ABRT (abort)
     9	     KILL (non-catchable, non-ignorable kill)
     14      ALRM (alarm clock)
     15      TERM (software termination signal)

     Some shells may provide a builtin kill command which is similar or identical to this utility.  Consult the builtin(1) manual page.

EXIT STATUS

     The kill utility exits 0 on success, and >0 if an error occurs.

EXAMPLES

     Terminate the processes with PIDs 142 and 157:

	   kill 142 157

     Send the hangup signal (SIGHUP) to the process with PID 507:

	   kill -s HUP 507

SEE ALSO

     builtin(1), csh(1), killall(1), ps(1), sh(1), kill(2), sigaction(2)

STANDARDS

     The kill utility is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.

HISTORY

     A kill command appeared in Version 3 AT&T UNIX.

BUGS

     A replacement for the command ``kill 0'' for csh(1) users should be provided.

BSD
								  April 28, 1995							       BSD