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CAT(1)			  BSD General Commands Manual			CAT(1)

     cat — concatenate and print files

     cat [-benstuv] [-] [file ...]

     The cat utility reads files sequentially, writing them to the standard
     output.  The file operands are processed in command line order.  A single
     dash represents the standard input.

     The options are as follows:

     -b	     Implies the -n option but doesn't number blank lines.

     -e	     Implies the -v option, and displays a dollar sign (‘$’) at the
	     end of each line as well.

     -n	     Number the output lines, starting at 1.

     -s	     Squeeze multiple adjacent empty lines, causing the output to be
	     single spaced.

     -t	     Implies the -v option, and displays tab characters as ‘^I’ as

     -u	     The -u option guarantees that the output is unbuffered.

     -v	     Displays non-printing characters so they are visible.  Control
	     characters print as ‘^X’ for control-X; the delete character
	     (octal 0177) prints as ‘^?’ Non-ascii characters (with the high
	     bit set) are printed as ‘M-’ (for meta) followed by the character
	     for the low 7 bits.

     The cat utility exits 0 on success, and >0 if an error occurs.

     Because of the shell language mechanism used to perform output redirect‐
     ion, the command “cat file1 file 2 > file1” will cause the original data
     in file1 to be destroyed!

     head(1), more(1), pr(1), tail(1), vis(1)

     Rob Pike, "UNIX Style, or cat -v Considered Harmful", USENIX Summer
     Conference Proceedings, 1983.

     A cat command appeared in Version 6 AT&T UNIX.

3rd Berkeley Distribution	  May 2, 1995	     3rd Berkeley Distribution

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