[file->chmod] changes the unix file permissions of a file. The permissions may be expressed in either octal or decimal notation.
file object->chmod(octal notation) file object->chmod(decimal notation)
Use the [file->chmod] tag. The following example changes the Unix file system permissions of a file to -rwxrwxr-x (read, write, and execute permissions for the file owner, read, write, and execute permissions for the file group, and read and execute permissions for all other system users).
local(f = file('/path/to/file.txt')) #f->chmod('0775') // using octal notation #f->chmod(509) // using decimal notation
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