NUM(1) — Unix Programmer’s Manual
NAME
num − number lines
SYNOPSIS
num [ file ... ]
DESCRIPTION
The lines in the specified files, or the standard input, are copied to the standard output preceded by line numbers. Tabs remain aligned in the output as the lines are printed preceded by the number blank padded to six digits and then 2 spaces.
Num is actually just the −n option of the cat(1) command.
SEE ALSO
th Berkeley Distribution