CHMOD is a utility to set the mode (CHMOD = CHange MODe) of a file or directory.
The mode dictates who on the system may access a file.
The mode is also known as permissions. Most, if not all, CGI scripts need to have
their permissions changed in order to function correctly
To CHMOD/change permissions in an FTP program, right click on the file and select "CHMOD"
or "Properties," depending on which FTP program you're using.
What do the numbers mean?
644 : owner can read and write, group/others can read only.
This is the default setting for all files, and static files should remain this way.
666 : all can read and write (known as "world writable").
This is set when a file, such a a guestbook, needs to have text added to it.
755: owner can read, write and execute, group/others can read and execute. Usually a CGI script is CHMOD to 755, so that it can be executed by visitors to the site.
777: all can read, write and execute. This is used when a file needs to be executed
as well as written to, or when a folder needs to be written to.
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