Uncategories

Changing File Permissions

  7       5     5
 user   group  world
 r+w+x  r+x    r+x
 4+2+1  4+0+1  4+0+1  = 755

The permission mode is computed by adding up the following values for the user, the file group, and for everyone else. The diagram shows how.

Read 4 – Allowed to read files
Write 2 – Allowed to write/modify files
eXecute 1 – Read/write/delete/modify/directory

Example:

0477 -r–rwxrwx owner has read only (4), other and group has rwx (7)
0677 -rw-rwxrwx owner has rw only(6), other and group has rwx (7)
0444 -r–r–r– all have read only (4)
0666 -rw-rw-rw- all have rw only (6)
0400 -r——– owner has read only(4), group and others have no permission(0)
0600 -rw——- owner has rw only, group and others have no permission
0470 -r–rwx— owner has read only, group has rwx, others have no permission
0407 -r—–rwx owner has read only, other has rwx, group has no permission
0670 -rw-rwx— owner has rw only, group has rwx, others have no permission
0607 -rw—-rwx owner has rw only, group has no permission and others have rwx

Source:
https://codex.wordpress.org/Changing_File_Permissions

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