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Question: Using the commands ps, cut, tr and kill, along with pipes, write a command that will find all sleep processes running on the system and kill them?

Answer: ps: check process status
Syntax: ps ?option
Option:
e: list all currently running processes (A for Linux)
f: gives full listing (give ancestry for Linux)
l: gives long listing
u username: list processes for the user only
S: sleeping
O: running
R: on run queue
Z: zombie (parent didn?t wait for death of its child
T: stopped or suspended




Category Unix Commands Interview Questions & Answers - Exam Mode / Learning Mode
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Question: Using the commands ps, cut, tr and kill, along with pipes, write a command that will find all sleep processes running on the system and kill them?
Answer:

ps: check process status
Syntax: ps ?option
Option:
e: list all currently running processes (A for Linux)
f: gives full listing (give ancestry for Linux)
l: gives long listing
u username: list processes for the user only
S: sleeping
O: running
R: on run queue
Z: zombie (parent didn?t wait for death of its child
T: stopped or suspended


Source: CoolInterview.com

Answered by: subramanian | Date: 5/7/2008 | Contact subramanian Contact subramanian

ps -s

will find all the sleep process.

kill "process ID"

will kill all the process. Source: CoolInterview.com

Answered by: monika | Date: 2/12/2010 | Contact monika Contact monika

I dont see need of tr though. We can use below command for the same.

ps -ef | grep sleep | awk '{print $1}'
Source: CoolInterview.com

Answered by: Nilesh | Date: 6/9/2010 | Contact Nilesh Contact Nilesh

This should suffice the work : -

ps -sf|awk '{ print $2}'|xargs kill Source: CoolInterview.com

Answered by: Ankit | Date: 6/24/2010 | Contact Ankit Contact Ankit

Im working as test engineer, i want learn unix os. Please update me with latest faqs. Source: CoolInterview.com

Answered by: mohan | Date: 8/23/2010 | Contact mohan Contact mohan


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