null(7) — Special Files

NAME

null − Data sink

Data written on a null special file are discarded.

Reads from a null special file always return 0 (zero) bytes.

To read a floppy disk and display the total number of records read in and output to /dev/null using the dd command:

dd if=/dev/disk/floppy0 of=/dev/null

To create a zero length file using the cat command:

cat > foo < /dev/null

/dev/null