Linux file and Directory permissions detailed introduction _linux

Linux file and Directory permissions interpretation

　　

How to set permissions for Linxu files and directories

　　

Character notation

　　

1) Ls-l: View permissions for all files in the directory

2 chmod u=r File: Assign the current (user user) permissions of the file to writable mode

3 chmod g=wrx File: Assigns the current (group GRUOP) permissions of the file files to writable, readable, executable mode

4 chmod g-x file: Subtract the current (group) permissions of a file from the executable mode

5 chmod o+w File: Add the current (all other) permissions of the file to the writable mode

6 chmod a-x file: minus the write mode for the current (user), (group), (all other) permissions of the file

7 chmod 777 File: Sets the current (user users), (group), (all other) permissions of the file to a readable writable executable mode

8) chmod-r 777 file: Sets the permissions of all files and folders in the file directory to the current (user users), (group), (all others) in a recursive manner, to the readable writable executable mode

Note:

If the Execute Modify permission appears Operation not permitted please add sudo chmod-r 777 file before the command

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