This option sets the permissions you want your files to be created with. What you set here is the mode to set on your files in octal (not a string, but a number always starting with 0). The default creates files with UNIX permissions of 0644 (rw-r–r–).
0666This setting has no effect on Windows servers.
The first non-zero digit (6 in the default above) determines the user permissions (i.e. permissions of the file owner), second non-zero digit is the group permissions and the last digit is permissions for other (i.e. everyone else). To convert permissions into the correct number, use the following key:
and sum the result for each one of the above groups. Thus, if you want read and write permissions for the user owning the files, specify 4+2=6 as the first non-zero digit. If you would want read and execute permissions (appropriate e.g. for directories) for the group that the file belongs to, specify 4+1=5 as the second non-zero digit. The default permission value above is interpreted as read and write permissions for the user and only read permissions (number 4) for the group and others.
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