rev(1) – reverse lines of a file or files
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REV(1)() (user commands) REV(1)() NAME rev – reverse lines of a file or files SYNOPSIS rev [-V] [-h] [file ...] DESCRIPTION The 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. -V, --version Output version information and exit. -h, --help Output help and exit. AVAILABILITY The rev command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/. util-linux April 2011 util-linux
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