chmod

Change the access permissions of a file or directory. More information: https://www.gnu.org/software/coreutils/chmod.

chmod u+x path/to/file

chmod u+rw path/to/file_or_directory

chmod g-x path/to/file

chmod a+rx path/to/file

chmod o=g path/to/file

chmod o= path/to/file

chmod -R g+w,o+w path/to/directory

chmod -R a+rX path/to/directory