Open System Services System Calls Reference Manual (G06.25+, H06.03+)

null(7) OSS System Calls Reference Manual
NAME
null - Is a data sink file
SYNOPSIS
/dev/null
DESCRIPTION
Data written on a null special file is discarded.
Reads from a null special file always return 0 (zero) bytes.
EXAMPLES
To create a zero-length file using the cat command, enter:
cat > foo < /dev/null
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