zzat - concatenate files using different instruction sequences
zzat [-AbdeEntTv] [-r loops] [-x sequence] [FILE]...
zzat -l | --list
zzat -h | --help
zzat -V | --version
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.
Equivalent to -vET.
Number nonempty output lines.
Output debugging information.
-e Equivalent to -vET.
Display $ at end of each line.
Number all output lines.
Concatenate all files loops times.
-t Equivalent to -vT.
Display TAB characters as ^I.
Use ^ and M- notation, except for LFD and TAB.
Read a file or a stream using the instruction sequence specified
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:
If no sequence is specified, the following default sequence is
repeat(-1, fread(1,32768), feof(1))
Display the list of supported keywords and functions and exit.
Display a short help message and exit.
Output version information and exit.
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
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
Copyright © 2002-2010 Sam Hocevar <firstname.lastname@example.org>.
zzat and this manual page are free software. They come without any
warranty, to the extent permitted by applicable law. You can
redistribute 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