Group items matching

in title, tags, annotations or url

- - regular file c - character device b - block device d - directory p - named pipe l - symbolic link

Lets look at a more complicated example. Assume we have UMASK=047. If our program creates a file with permissions 777, then our UMASK does nothing to the first digit, but masks out the 4 from the second digit, giving us 3. Then, because the last digit of the UMASK is 7, this masks out everything, so the permissions here are 0. As a result, the permissions for the file are 730. However, if the program creates the file with permissions 666, the resulting permissions are 620. The easy way to figure out the effects of the UMASK are to subtract the UMASK from the default permissions that the program sets. (Note that all negative values become 0.)

Here the <new_umask> can either be the numeric value (e.g., 007) or symbolic. For example, to set the umask to 047 using the symbolic notation, we have umask u=,g=r,o=rwx