Linux-Handson Problem (DU)

 






Program: First copy below in any file and name it a.sh , after that give execute permission chmod +x a.sh. Run it like ./a.sh.



Code :


#!/bin/sh

Green='\033[0;32m'



while :

do

echo "${Green}WELCOME TO LINUX KURIOSITY"

echo "${Green}LEARN DU COMMAND IN INTERACTIVE WAY"

echo "${Green}Press 0 to learn about du command"

echo "${Green}Press 1 to learn about -a option"

echo "${Green}Press 2 to learn about -h option"

echo "${Green}Press 3 to learn about -c option"

echo "${Green}Press 4 to learn about -L option"

echo "${Green}Press 5 to learn about -s option"

echo "${Green}Press 6 to learn about --time option"

echo "${Green}Press 7 to learn about -x option"

echo "${Green}Press 8 to exit"


echo "Please enter the option"

read option


case $option in

0)

echo "#########START#######"

echo "Summarize disk usage of each FILE, recursively for directories."

echo "#########END########"

;;

1)

echo "#########START#######"

echo "-a write counts for all files, not just directories"

du -a

echo "#########END########"

;;

2)

echo "########START######"

echo "-h option shows the usuage of all the file systems in human readable format"

du -h

echo "#########END######"

;;

3)

echo "########START#####"

echo "-c option produce a grand total"

du -c

echo "########END#######"

;;

4)

echo "########START####"

echo "-L option dereference all links"

du -L

echo "#########END#####"

;;

5)

echo "#########START####"

echo "-s option display only a total for each argument"

du -s

echo "#########END#####"

;;

6)

echo "#########START###"

echo "--time option is used to show last modification time"

du --time du.sh

echo "#########END#####"

;;

7)

echo "########START####"

echo "-x option is used to ignore some specific file"

du --exclude='*.sh' -a

echo "########END#####"

;;

8)

break

;;

esac

done


Output:


WELCOME TO LINUX KURIOSITY

LEARN DU COMMAND IN INTERACTIVE WAY

Press 0 to learn about du command

Press 1 to learn about -a option

Press 2 to learn about -h option

Press 3 to learn about -c option

Press 4 to learn about -L option

Press 5 to learn about -s option

Press 6 to learn about --time option

Press 7 to learn about -x option

Press 8 to exit

Please enter the option

0

#########START#######

Summarize disk usage of each FILE, recursively for directories.

#########END########

WELCOME TO LINUX KURIOSITY

LEARN DU COMMAND IN INTERACTIVE WAY

Press 0 to learn about du command

Press 1 to learn about -a option

Press 2 to learn about -h option

Press 3 to learn about -c option

Press 4 to learn about -L option

Press 5 to learn about -s option

Press 6 to learn about --time option

Press 7 to learn about -x option

Press 8 to exit

Please enter the option

1

#########START#######

-a write counts for all files, not just directories

4 ./du.sh

4 ./df.sh

0 ./1

12 .

#########END########

WELCOME TO LINUX KURIOSITY

LEARN DU COMMAND IN INTERACTIVE WAY

Press 0 to learn about du command

Press 1 to learn about -a option

Press 2 to learn about -h option

Press 3 to learn about -c option

Press 4 to learn about -L option

Press 5 to learn about -s option

Press 6 to learn about --time option

Press 7 to learn about -x option

Press 8 to exit

Please enter the option

2

########START######

-h option shows the usuage of all the file systems in human readable format

12K .

#########END######

WELCOME TO LINUX KURIOSITY

LEARN DU COMMAND IN INTERACTIVE WAY

Press 0 to learn about du command

Press 1 to learn about -a option

Press 2 to learn about -h option

Press 3 to learn about -c option

Press 4 to learn about -L option

Press 5 to learn about -s option

Press 6 to learn about --time option

Press 7 to learn about -x option

Press 8 to exit

Please enter the option

3

########START#####

-c option produce a grand total

12 .

12 total

########END#######

WELCOME TO LINUX KURIOSITY

LEARN DU COMMAND IN INTERACTIVE WAY

Press 0 to learn about du command

Press 1 to learn about -a option

Press 2 to learn about -h option

Press 3 to learn about -c option

Press 4 to learn about -L option

Press 5 to learn about -s option

Press 6 to learn about --time option

Press 7 to learn about -x option

Press 8 to exit

Please enter the option

4

########START####

-L option dereference all links

12 .

#########END#####

WELCOME TO LINUX KURIOSITY

LEARN DU COMMAND IN INTERACTIVE WAY

Press 0 to learn about du command

Press 1 to learn about -a option

Press 2 to learn about -h option

Press 3 to learn about -c option

Press 4 to learn about -L option

Press 5 to learn about -s option

Press 6 to learn about --time option

Press 7 to learn about -x option

Press 8 to exit

Please enter the option

5

#########START####

-s option display only a total for each argument

12 .

#########END#####

WELCOME TO LINUX KURIOSITY

LEARN DU COMMAND IN INTERACTIVE WAY

Press 0 to learn about du command

Press 1 to learn about -a option

Press 2 to learn about -h option

Press 3 to learn about -c option

Press 4 to learn about -L option

Press 5 to learn about -s option

Press 6 to learn about --time option

Press 7 to learn about -x option

Press 8 to exit

Please enter the option

6

#########START###

--time option is used to show last modification time

4 2019-10-12 19:54 du.sh

#########END#####

WELCOME TO LINUX KURIOSITY

LEARN DU COMMAND IN INTERACTIVE WAY

Press 0 to learn about du command

Press 1 to learn about -a option

Press 2 to learn about -h option

Press 3 to learn about -c option

Press 4 to learn about -L option

Press 5 to learn about -s option

Press 6 to learn about --time option

Press 7 to learn about -x option

Press 8 to exit

Please enter the option

7

########START####

-x option is used to ignore some specific file

0 ./1

4 .

########END#####

WELCOME TO LINUX KURIOSITY

LEARN DU COMMAND IN INTERACTIVE WAY

Press 0 to learn about du command

Press 1 to learn about -a option

Press 2 to learn about -h option

Press 3 to learn about -c option

Press 4 to learn about -L option

Press 5 to learn about -s option

Press 6 to learn about --time option

Press 7 to learn about -x option

Press 8 to exit

Please enter the option

8

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