Linux File Management-IT dream-qi-sharing

Modify the owner and group of the file chown [options] USERNAMEFILENAME modify the owner of the file-R recursive modification -- referenceAB takes A as A reference, change B to the same as that of A. You can modify the chownUSERNAME: GROUPNAMEFILENAMEchownUSERNAME of the owner and group at the same time. GROUPNAMEFILENAMEchown: GROUPN: Modify the owner and group of the file
Chown[Options] modify the owner of a file using USERNAME FILENAME
-R recursive Modification
-- Refere NcE = a B. Use A as the reference and Change B to be the same as.
You can modify the owner and group at the same time.
Chown USERNAME :GROUPNAME FILENAME
Chown USERNAME .GROUPNAME FILENAME
Chown: GROUPNAME FILENAME

Chgrp[Options] groupname filename: Modify the object group

Modify file permissions
Chmod[Options] mode File...
Method:
Chmod u = rw-a.txt owner to grant permissions
Chmod g-w a.txt makes the group not have w Permissions
Chmod a + x/+ x gives everyone the permission to execute the command.
If chmod modifies the directory, only the permission of the directory is modified. The permission of the internal file remains unchanged.
-R can be modified recursively.
-- Reference =
Separate multiple strings with commas (,).
Eg: chmod u = rx, go = r a.txt