How to change directory permissions in Linux with chmod

chmod 777 Start by setting permission numbers to 777 to grant files more access, then use the chmod command to modify specific permissions for each folder in var.. chmod a-w file (removes all writing permissions) chmod o+x file (sets execute permissions for other (public permissions)) chmod u=rx file (Give the owner rx permissions,

mod apk ina777, chmod 777 is considered potentially dangerous because you are giving read, write and execute permission on a filedirectory to everyone..