Write a script set_x_permission.sh that takes a filename as an argument and adds execution permission to the file for the user if the file is a regular file. Make sure that your script checks for error conditions. Use the following pseudocode to develop your script:

#!/bin/bash

if # of arguments is one

then

if file in $1 exists

then

if file in $1 is a regular file

then

add execute permission

else

print message that this is not a regular file

fi

else

print message that the file does not exist

fi

else

print the "Usage" message

fi

SCRIPT 2 ASSIGNMENT Write a script backup.sh that prompts the user a source folder and a destination folder and then copies recursively the source folder into the destination folder while preserving the nesting hierarchy of the source folder. Your script must validate the following two conditions before you create a duplicate copy of the source folder into the destination folder:

1) the source folder must exist, and

2) the destination folder does not exist. In addition, your script must seek at least a confirmation before creating a copy backup of the source folder in the destination folder.

Follow SCRIPTS 1 and 2 and write their equivalent in C++.