OSA A1

A1: Implementation to create/rename/delete a file.

-> Program:

while true

do

echo "1.Create File :";                          #echo is just like the print f command in C

echo "2.Rename a File :";

echo "3.Delete File :";

echo "4.Exit";

echo "Enter your choice : ";

read ch;

case $ch in

1)

echo " Please enter File name : ";

read filename;

if [ -f $filename ];                                        

then

echo"File already existing"

else

touch $filename;

echo "File created "

ls -t | head -n 15                                                #display the contents of the directory after the desired action has

fi # end of if statement

;;          # to break first switch case

2)

echo "Enter the name of a file to be rename : ";

read oldfile;

echo "Enter the new file name to be assign : ";

read newfile;

mv $oldfile $newfile;

echo "File successfully renamed";

ls -t | head -n 15

;;

3)

echo "Enter the file name to be delete: ";

read filename

if [ -f $filename ];

then

rm -f $filename

echo "After deleting file: ";

ls -t | head -n 15

else

echo "No such file or directory"

fi

;;

4)

exit;

;;

esac #end of switch case

done

[student@localhost Assingments]$ gedit A-1.sh

[student@localhost Assingments]$ chmod 777 A-1.sh

[student@localhost Assingments]$ ./A-1.sh

1.Create File :

2.Rename a File :

3.Delete File :

4.Exit

Enter your choice :

1

 Please enter File name :

test

File created

test //file 'test' created

A-1.sh

A-1f.sh

A-1f.sh~

test1

file_1

A-1.sh~

abc

A-6.sh

A-5.sh

A-4.sh

Assign2final.zip

A-2.sh

A-3.sh

Assign6B.zip

1.Create File :

2.Rename a File :

3.Delete File :

4.Exit

Enter your choice :

2

Enter the name of a file to be rename :

test

Enter the new file name to be assign :

file_name1

File successfully renamed

file_name1 //test renamed to file_name1

A-1.sh

A-1f.sh

A-1f.sh~

test1

file_1

A-1.sh~

abc

A-6.sh

A-5.sh

A-4.sh

Assign2final.zip

A-2.sh

A-3.sh

Assign6B.zip

1.Create File :

2.Rename a File :

3.Delete File :

4.Exit

Enter your choice :

2

Enter the name of a file to be rename :

abcd

Enter the new file name to be assign :

file_name2

No such file or directory

file_name1

A-1.sh

A-1f.sh

A-1f.sh~

test1

file_1

A-1.sh~

abc

A-6.sh

A-5.sh

A-4.sh

Assign2final.zip

A-2.sh

A-3.sh

Assign6B.zip

1.Create File :

2.Rename a File :

3.Delete File :

4.Exit

Enter your choice :

3

Enter the file name to be delete:

file_1

After deleting file:

file_name1

A-1.sh

A-1f.sh

A-1f.sh~

test1

A-1.sh~

file_name2

A-6.sh

A-5.sh

A-4.sh

Assign2final.zip

A-2.sh

A-3.sh

Assign6B.zip

1.Create File :

2.Rename a File :

3.Delete File :

4.Exit

Enter your choice :

3

Enter the file name to be delete:

test_unexisting //Deleting a file that does not exist!

No such file or directory

1.Create File :

2.Rename a File :

3.Delete File :

4.Exit

Enter your choice :

4

[student@localhost Assingments]$