Question

In Putty

1. Create Bash shell script that would let a user make a copy of all the files in a directory. (3 points) 2. Create two Bash shell scripts that will perform some work (of your choice). (2*3 = 6 points) 3. Create a Bash shell script that would serve as a menu for the three scripts you have created. (1 point)

Answer 1

Please find the following shell scripts for the given question.

Steps for Program#1:

1.Read the source directory and destination directory.

2. then copy all the files from source directory to desitnaiton directory.

Steps for Program#2

Shell script# 1:

1. display username and current working directory

2. display usage of all the disks

Shell script# 2:

1. displays time of the host

2. displays list of users logged in

3. displays the uptime of a host

Steps for Program#3:

1. Use menu based approach for running the three scripts based on user's selection in this script.

Shell Script 1:

#!/bin/bash

source=
desti=
echo ""
echo ""
echo " This script is used to copy all the files from"
echo " source directory to destination directory."
echo ""
echo ""

#read the source dir
echo "Enter the source directory: "
read source

#check if the directory is present or not
if [ ! -d $source ]
then
echo "Source directory not found"
exit 1
fi

#read the destination dir
echo "Enter the destination directory: "
read desti

#check if the directory is present or not
if [ ! -d $destination ]
then
echo "Destination directory not found"
exit 1
fi

#copy all the files from source to destination
echo "copy is in progress..."
cp -p $source/* $desti/

#check if the copy is successful or not
if [ $? -eq 0 ]
then
echo "Files copied fine"
else
echo "Error in file copying"
fi

Shell script 2-a:

#!/bin/bash

echo "Current logged in user name is: $USERNAME"
echo " "
echo " "
echo "current working directory is: `pwd`"

echo " "
echo " "

echo "Following are the usage of disks in the host:"
echo " "
echo " "
#df command is to get the disk usage and free space
df

Shell Script 2-b:

#!/bin/bash

echo "Current time is: `date`"
echo ""
echo ""

echo "Following are the list of users logged in to the host:"
echo ""
who

echo ""
echo ""
echo "Uptime of the host is:"
echo " "
uptime

Shell script 3:

#!/bin/bash
input=

#specifies the path of the script1, script2 here,
#so that when we run it, it will take the right to execute

DIR="."

while [ true ]
do
#display user menus
echo " "
echo "1. Copy files"
echo "2. Disk usage founder"
echo "3. Time of a host"
echo "4. Exit"
echo ""

#read the user input
read input

#validate the read input with 1,2,3,4
if [ "$input" != "1" ] && [ "$input" != "2" ] && [ "$input" != "3" ] && [ "$input" != "4" ]
then
echo "Invalid input. exiting.."
exit 1
elif [ "$input" == "1" ]
then
#run scrip1
./$DIR/scrip1.sh
elif [ "$input" == "2" ]
then
#run scrip2_a.sh
./$DIR/scrip2_a.sh
elif [ "$input" == "3" ]
then
#run scrip2_b.sh
./$DIR/scrip2_b.sh
else
echo "Exiting.."
sleep 1
exit 0
fi

done

Output of the script3 run:

$ ./scrip3.sh

1. Copy files
2. Disk usage founder
3. Time of a host
4. Exit

1

This script is used to copy all the files from
source directory to destination directory.

Enter the source directory:
test1
Enter the destination directory:
test2
copy is in progress...
Files copied fine

1. Copy files
2. Disk usage founder
3. Time of a host
4. Exit

2
Current logged in user name is: GUHAN

current working directory is: /c/Users/GUHAN

Following are the usage of disks in the host:

Filesystem 1K-blocks Used Available Use% Mounted on
C:/Program Files/Git 104857596 68001460 36856136 65% /
D: 178257916 47322164 130935752 27% /d
E: 204244988 104517076 99727912 52% /e

1. Copy files
2. Disk usage founder
3. Time of a host
4. Exit

3
Current time is: Thu, Jul 30, 2020 6:52:31 AM

Following are the list of users logged in to the host:

radi            tty1        2020-03-16  19:27
tecnt       pts/0               2020-03-16      19:26   (192.168.56.1)
robt            pts/1           2020-03-16      19:27   (192.168.56.1)

Uptime of the host is:

00:10:18 up 122 days, 30 min, 2 users, load average: 0.22, 0.41, 0.32

1. Copy files
2. Disk usage founder
3. Time of a host
4. Exit

4
Exiting..

Script 1 screen shot:

#!/bin/bash source= desti= echo echo echo " This script is used to copy all the files from" source directory to destination directory." echo echo - echo #read the source dir echo "Enter the source directory: " read source #check if the directory is present or not if [ ! -d $source ] then echo "Source directory not found" exit i fi #read the destination dir echo "Enter the destination directory: " read desti #check if the directory is present or not if [ ! -d $destination ] then echo "Destination directory not found" exit 1 fi #copy all the files from source to destination echo "copy is in progress...' cp -p $source/* $desti/ #check if the copy is successful or not if [ $? -eq 0] then echo "Files copied fine" else echo "Error in file copying" fi

Script 2a screen shot:

#!/bin/bash echo "Current logged in user name is: $USERNAME" echo - - echo echo "current working directory is: 'pwd" echo echo echo "Following are the usage of disks in the host:" echo". echo #df command is to get the disk usage and free space df

Script 2b screen shot:

#!/bin/bash echo "Current time is: 'date'" echo echo echo "Following are the list of users logged in to the host:" echo who echo echo 1 echo "Uptime of the host is:" echo uptime

Script 3 screen shot:

#!/bin/bash input= #specifies the path of the scriptı, script2 here, #so that when we run it, it will take the right to execute DIR="," while [ true ] do #display user menus echo - echo "1. Copy files" echo "2. Disk usage founder" echo "3. Time of a host" echo "4. Exit" echo #read the user input read input #validate the read input with 1,2,3,4 if [ "$input" != "1" ] & [ "$input" != "2" ] & [ "$input" != "3" ] & [ "$input" != "4" ] then echo "Invalid input. exiting.." exit1 elif [ "$input" == "1" ] then #run scripi ./$DIR/scripi.sh elif [ "$input" "2" ] then #run scrip2_a.sh - /$DIR/scrip2_a.sh elif [ "$input" == "3" ] then #run scrip2_b.sh ./$DIR/scrip2_b.sh else echo "Exiting.." sleep 1 exito fi done

Output:

$ ./scrip3.sh 1. copy files 2. Disk usage founder 3. Time of a host 4. Exit 1 This script is used to copy all the files from source directory to destination directory. test1 Enter the source directory: Enter the destination directory: test2 copy is in progress... Files copied fine 1. Copy files 2. Disk usage founder 3. Time of a host 4. Exit 2 Current logged in user name is: GUHAN current working directory is: /c/users/GUHAN Following are the usage of disks in the host: Filesystem 1K-blocks Used Available use% Mounted on C:/Program Files/Git 104857596 68001460 36856136 65% / D: 178257916 47322164 130935752 27% d E: 204244988 104517076 99727912 52% /e 1. Copy files 2. Disk usage founder 3. Time of a host 4. Exit 3 Current time is: Thu, Jul 30, 2020 6:52:31 AM Following are the list of users logged in to the host:

radi ttyi 2020-03-16 19:27 tecnt pts/0 2020-03-16 19:26 (192.168.56.1) robt pts/1 2020-03-16 19:27 (192.168.56.1) Uptime of the host is: 00:10:18 up 122 days, 30 min, 2 users, load average: 0.22, 0.41, 0.32 1. copy files 2. Disk usage founder 3. Time of a host 4. Exit 4 Exiting..