Question

You must write the shell in C/C++ for Linux systems, and the shell must have the following
functionality :
can use command list to list files and directory of a given directory;

Answer 1

echo " "

echo "----Implementing Directory Management----"

echo " "

ch=0

while [ $ch -lt 6 ]

do

echo "Press the following to :"

echo "1) Create a new directory."

echo "2) Modify a directory."

echo "3) Navigate into directory."

echo "4) Listing directories."

echo "5) Exit."

read ch

  

case $ch in

1) echo " "

echo "---Creation of Directory---"

echo " "

echo "Enter the name of the directory:"

read name

mkdir $name

;;

2) echo " "

echo "---Modification of Directory---"

echo " "

echo "Enter the directory to be modified:"

read orgdir

echo "Press the following to :"

echo " "

echo "1) Rename directory."

echo "2) Copy directory to another."

echo "3) Move directory."

echo "4) Delete directory."

echo "5) Exit from Modify Mode."

read modch

  

case $modch in

1) echo " "

echo "---Rename a directory---"

echo " "

echo "Enter new name for the directory:"

read newname

mv $orgdir $newname

;;

2) echo " "

echo "---Copying a directory to another---"

echo " "

echo "Enter target directory:"

read target

mkdir $target

cp $orgdir $target

;;

3) echo " "

echo "---Moving a directory---"

echo " "

echo "Enter target directory:"

read target

mkdir $target

mv $orgdir $target

;;

4) echo " "

echo "---Deleting a directory---"

echo " "

rmdir $orgdir

;;

5) echo " "

echo "---Exiting from modify mode---"

echo " "

exit

;;

esac

;;

3)  

echo "---Navigation of Directory---"

echo " "

echo "Enter your choice for method of navigation :"

echo "1) Go to Parent Directory. "

echo "2) Navigate to specific directory."

echo "3) Exit from Navigate Mode."

read navch

  

case $navch in

1) echo " "

echo "---Parent Directory---"

echo " "

cd ..

pwd

;;

2) echo " "

echo "---Navigation to Specific Directory---"

echo " "

echo "Enter the target Path:"

read path

cd $path

pwd

;;

3) echo " "

echo "---Exiting from Navigate Mode---"

echo " "

exit

;;

esac

;;

4)  

echo "--- Listing of Directories---"

echo " "

echo "Enter your choice for method of listing :"

echo "1) List of directories. "

echo "2) List of directories and their details."

echo "3) Exit from List Mode."

read lisch

  

case $lisch in

1) echo " "

echo "---List of directories---"

echo " "

ls

;;

2) echo " "

echo "---Detailed List of directories---"

echo " "

ls -l

;;

3) echo " "

echo "---Exiting from List Mode---"

echo " "

exit

;;

esac

;;

5)echo " "

echo "---Exiting---"

echo " "

exit

;;

esac

done