Create a simple shell in C$.$ The shell should support the following commands:

$1.$ cd $-$ change directory

cd

$2.$ pwd $-$ print working directory

pwd

$3.$ exit $-$ exit the shell

exit

$4.$ help $-$ display help

help

A sample output would be:

myshell$>$ help

cd $-$ change directory

pwd $-$ print working directory

exit $-$ exit the shell

help $-$ display help

mkdir $-$ create a directory

rmdir $-$ remove a directory

ls $-$ list files in a directory

cp $-$ copy a file

mv $-$ move a file

rm $-$ remove a file

$5.$ mkdir $-$ create a directory

mkdir

$6.$ rmdir $-$ remove a directory

rmdir

$7.$ ls $-$ list files in a directory

ls

A sample output would be:

myshell$>$ ls

file$1$ file$2$ file$3$

$8.$ cp $-$ copy a file

cp

$9.$ mv $-$ move a file

mv

$10.$ rm $-$ remove a file

rm