REV(1) REV(1)
NAME
rev, revpag - reverse lines or pages
SYNOPSIS
rev [ file ... ]
revpag [ option ... ] [ file ... ]
DESCRIPTION
Rev copies the standard input or the named files to the
standard output, reversing the order of characters in every
line.
Revpag copies the standard input or the named files to the
standard output, reversing the order of the pages. (The
name `-' means the standard input.) Options define what
constitutes a `page':
-d The input is troff(1) output; page breaks are encoded
in it.
-f Append a new-page character (014) to the last input
page (which is the first page on the output), if this
page is not of the declared length.
-l n Set the number of lines per page in ordinary ASCII
input (66 by default). A new-page character (014) is
also recognized as a page break.
-o list
Output only pages whose page numbers appear in the
comma-separated list of numbers and ranges. A `page
number' means the ordinal position of a page in the
input. A range n-m means pages n through m. In a
range, a missing m means the beginning; a missing n
means the end.
EXAMPLES
rev <webster | sort | rev >walker
From a standard Webster's dictionary, produce Walker's
rhyming dictionary, which is alphabetized from right to
left.
tail -r <forward >backward
Reverse the order of lines in a file; see tail(1).