chmod Changes file mode intchmod stringfilename intmode Attempts to change the mode of the file specified by filename to that given in mode. Note that mode is not automatically assumed to be an octal value, so strings (such as "g+w") will not work properly. To ensure the expected operation, you need to prefix mode with a zero (0): &return.success; See also chown and chgrp. ¬e.no-windows;