ubuntu--file attribute management (Command:chmod,)

1. In the user home directory under the Dioxide folder common an ABC file and modify its properties to the owner of the ABC file read and Write permission to execute, the group of usersRead/writeThe permissions of other usersReadThe permissions

　　

　　

Remove the Execute permission from the ABC file owner and remove the permissions written by the user of the group that owns the ABC file

　　

　　

　　Add read permissions to all users of the ABC file

　　

2. Change the owner of files and folders

　　directive ( Chown [-r] New owner File/folder name ), which plus parameter [-r] will recursively change the folder itself, i.e. its subfolders and the owner of the files therein

　　

3. Change the owning group of files and folders

　　Directive ( Chgrp [-r] New group file/folder name ), in which the parameter [-r] Recursively changes the folder itself, i.e. its subfolders and the groups in which the files belong

　　

ubuntu--file attribute management (Command:chmod,)