Chmod phân quyền

Permissions: read, write, execute

r=read: 4

w=write:2

e=execute:1

Permissions Classes: u=User, g=Group, o=Other,a=all user

Full permissions Class: 777

Read only permissions Class: 444

Read and write permissions Class: 666

Option: 755,766,644

# chmod -R a+rws filename

Phân quyền:

#sudo chown user filename

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