Manual Reference Pages - P (1)
p - paginate
file ... ]
P copies its standard input, or the named files if given,
to its standard output,
stopping at the end of every 22nd line, and between files,
to wait for a newline from the user.
The option sets the
number of lines on a page.
While waiting for a newline,
p interprets the commands:
Pass the rest of the line to the shell as a command.
Visit the GSP FreeBSD Man Page Interface.
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