rev: (man) add note about limitations

Addresses: https://github.com/karelzak/util-linux/issues/972
Signed-off-by: Karel Zak <kzak@redhat.com>
pull/978/head
Karel Zak 3 years ago
parent c2e82a4aaa
commit 5b9b6d2a74
  1. 4
      text-utils/rev.1

@ -43,6 +43,10 @@ The
.B rev
utility copies the specified files to standard output, reversing the order of
characters in every line. If no files are specified, standard input is read.
.PP
This utility is a line-oriented tool and it uses in-memory allocated buffer
for a whole wide-char line. If the input file is huge and without line breaks
than allocate the memory for the file may be unsuccessful.
.SH OPTIONS
.TP
\fB\-V\fR, \fB\-\-version\fR

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