PR(05): Create a program for Display Operating System Details Like Name of OS, Login Name, Host name etc.......

while true

do

echo "1.Display Operating System Name";

echo "2.Disply Login Name";

echo "3.Display Host Name";

echo "4.Exit";

echo "Enter Your Choice";

read ch;

case $ch in

1)

uname -o

;;

2)

who

;;

3) uname -n

;;

4)

exit

                ;;

esac

done

PR(04): Create a program for display list of active processes, display the information of Process, Display the global priority of the process, Change the priority of process, & kill the process.

while true

do

                echo "1.Display active process in shell.";

                echo "2.Display information about process";

                echo "3.Display the Global priority of process";

                echo "4.Change the priority of process.";

                echo "5.kill the process";

                echo "6.Exit.";

                echo "Enter your choice";

                read ch;

                case $ch in

                1)

                                ps

                                ;;

                2)

                                ps -ef

                                ;;

                3)

                                ps -axl | more

                                ;;

                4)

                echo "Enter the pid of open process";

                read pid

                ps -axl | grep $pid

                echo "Enter the prioity for the process";

                read pr

                renice $pr $pid

                ;;

                5)

                echo "Enter the pid  to kill process";

                read pid

                kill $pid

                ;;

                6)

                exit

                ;;

esac

done

PR(03): Implementation of Create/Rename/Delete a Directory using Unix/Linux Command

while true

do

echo "1.Creation of directory";

echo "2.Deletion of Directory";

echo "3.Change Directory & Display  Node Details";

echo "4.Exit";

echo "Enter Your Choice :";

read ch;

case $ch in

1)

  echo "Enter The Directory Name to Be Created ";

  read dir;

  if [ -d $dir ]

  then

     echo "Directory Laready Existing!!!";

  else

     mkdir $dir;

     echo "Directory Created Successfully!!!";

     echo "Created Directory Can be Checked From the Following Table";

     ls -t | head -n 15

  fi

  ;;

2)

  echo "Enter The name Of the Directory to be Deleted";

  read dir;

  if [ -d $dir ]

  then

     rmdir $dir;

     echo "Directory deleted Successfully!!!";

     echo "Deleted Directory Can be Checked from the following table";

     ls -t | head -n 15

  else

     echo "No such Directory Exists!!!";

  fi

  ;;

3)

  echo "Changing Current Working Directory To:";

  cd /home/redhat/dm/a

  pwd

  echo "The Node Details Of Each File In The Working Directory Is As Follows:";

  ls -i

  ;;

4)

  exit;

  ;;

esac

done