zzat(1) 						      General Commands Manual							   zzat(1)

NAME

       zzat - concatenate files using different instruction sequences

SYNOPSIS

       zzat [-AbdeEntTv] [-r loops] [-x sequence] [FILE]...
       zzat -l | --list
       zzat -h | --help
       zzat -V | --version

DESCRIPTION

       The zzat utility reads files sequentially, writing them to the standard output. The user can decide which sequence of library calls is used
       to seek and read data.

       zzat is primarily used as a debugging tool for zzuf, because it can emulate different programs' ways to read files.

OPTIONS

       -A, --show-all
	      Equivalent to -vET.

       -b, --number-nonblank
	      Number nonempty output lines.

       -d, --debug
	      Output debugging information.

       -e     Equivalent to -vET.

       -E, --show-ends
	      Display $ at end of each line.

       -n, --number
	      Number all output lines.

       -r, --repeat=loops
	      Concatenate all files loops times.

       -t     Equivalent to -vT.

       -T, --show-tabs
	      Display TAB characters as ^I.

       -v, --show-nonprinting
	      Use ^ and M- notation, except for LFD and TAB.

       -x, --execute=sequence
	      Read a file or a stream using the instruction sequence specified in sequence.

	      Instructions are executed sequentially until the end of the program.  End-of-file is not an exit condition, except  where  the  feof
	      keyword is used:

		  fread(1,10); feof(1); fread(1,10)

	      Loops are permitted using the repeat keyword. Again, feof can be used to prematurely break out of a loop:

		  repeat(10000, fgetc() feof(1))

	      Instructions  can  be  separated	by spaces, commas or semicolons.  A list of all available instructions and control keywords can be
	      obtained using this command:

		  zzat -l

	      If no sequence is specified, the following default sequence is used:

		  repeat(-1, fread(1,32768), feof(1))

       -l, --list
	      Display the list of supported keywords and functions and exit.

       -h, --help
	      Display a short help message and exit.

       -V, --version
	      Output version information and exit.

EXAMPLES

       Read the first 1000 bytes of f, then exit:

	   zzat -x 'fread(1,1000)' f

       Read the first four bytes of f, using four different instructions:

	   zzat -x 'getc(),fgetc(),getc_unlocked(),_IO_getc()' f

       Read f entirely, by calling getc() repeatedly until end-of-file is reached:

	   zzat -x 'repeat(-1, getc(), feof(1))' f

       Read f entirely, in chunks of 32768 bytes until end-of-file is reached:

	   zzat -x 'repeat(-1, fread(1,32768), feof(1))' f

SEE ALSO

       zzuf(3), libzzuf(3)

AUTHOR

       Copyright (C) 2002-2010 Sam Hocevar <sam@hocevar.net>.

       zzat and this manual page are free software. They come without any warranty, to the extent permitted by	applicable  law.  You  can  redis-
       tribute them and/or modify them under the terms of the Do What The Fuck You Want To Public License, Version 2, as published by Sam Hocevar.
       See http://sam.zoy.org/wtfpl/COPYING for more details.

       zzuf's  webpage	can  be  found	at  http://caca.zoy.org/wiki/zzuf.   An  overview  of	the   architecture   and   inner   works   is	at
       http://caca.zoy.org/wiki/zzuf/internals.

zzat 0.13							    2010-01-07								   zzat(1)