JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD MCA 2020 LINUX PROGRAMMING Previous Question Paper (October/ November - 2020 - R15)

The following shell script reads 10 integers from the user and determines the largest value using a loop and a comparison condition:

#!/bin/bash
echo "Enter 10 integers:"
read max
for i in {2..10}
do
  read num
  if [ $num -gt $max ]
  then
    max=$num
  fi
done
echo "The largest integer is: $max"

Process utilities in Linux are used to monitor, manage, and control active processes. Key utilities include:

• ps: Displays information about currently running processes. Syntax:
  ps [options]
  Common options include -e (all processes) and -f (full-format listing).
• top: Provides a dynamic, real-time view of running system processes, showing CPU and memory usage. Syntax:
  top
• kill: Sends a signal to a process, typically to terminate it. Syntax:
  kill [-signal] [PID]
• nice: Starts a process with a modified scheduling priority. Syntax:
  nice -n [priority] [command]
• renice: Alters the scheduling priority of an already running process. Syntax:
  renice [priority] -p [PID]
• pgrep: Searches for processes based on name or other attributes and returns their PIDs. Syntax:
  pgrep [pattern]