[Solved] What will be the output of the following command sequence?sleep 100 & kill -15 $!Assuming $! is the PID of the sleep process. | Linux CLI

Linux CLI - Process Management

What will be the output of the following command sequence?

sleep 100 &
kill -15 $!

Assuming $! is the PID of the sleep process.

AThe sleep process stops gracefully after receiving SIGTERM

BThe sleep process is immediately killed without cleanup

CThe sleep process ignores the signal and continues running

DSyntax error due to incorrect kill command

Step-by-Step Solution

Solution:

Step 1: Understand the commands
sleep 100 & runs sleep in background. $! stores its PID. kill -15 $! sends SIGTERM (signal 15) to that PID.
Step 2: Effect of SIGTERM on sleep
SIGTERM asks the process to stop gracefully. Sleep will stop waiting and exit cleanly.
Final Answer:
The sleep process stops gracefully after receiving SIGTERM -> Option A
Quick Check:
kill -15 sends SIGTERM = graceful stop [OK]

Quick Trick: Signal 15 (SIGTERM) politely stops processes [OK]

Common Mistakes:

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