change the permissions of a file in linux code example

Example 1: debian give write permission

sudo chmod -R 757 /var/www

Example 2: change the permissions of a folder in linux

sudo chmod -R 757 <file>

Example 3: how to change permissions on a file in linux

sudo chmod -R ugo+rwx /file/path

Example 4: how to set execute permission in linux

chmod +x script-name-here.sh #Change the "script-name-here" to the name of your .sh file.