Open Source Software

zdiff(1)



NAME

   zdiff - decompress and compare two files line by line

SYNOPSIS

   zdiff [options] file1 [file2]

DESCRIPTION

   Zdiff  compares  two  files  ('-'  means  standard  input), and if they
   differ, shows the differences line  by  line.  If  any  given  file  is
   compressed,  its  decompressed content is used. Zdiff is a front end to
   the diff program and has the limitation that messages from  diff  refer
   to temporary filenames instead of those specified.

   The supported formats are bzip2, gzip, lzip and xz.

   Compares  <file1>  to  <file2>.  If  <file2> is omitted zdiff tries the
   following:

          1. If <file1> is compressed, compares its decompressed  contents
          with  the  corresponding  uncompressed file (the name of <file1>
          with the extension removed).

          2. If <file1> is uncompressed, compares it with the decompressed
          contents  of  <file1>.[lz|bz2|gz|xz]  (the  first  one  that  is
          found).

          3. If no suitable file is found, compares <file1> with data read
          from standard input.

   Exit status is 0 if inputs are identical, 1 if different, 2 if trouble.

OPTIONS

   -h, --help
          display this help and exit

   -V, --version
          output version information and exit

   -a, --text
          treat all files as text

   -b, --ignore-space-change
          ignore changes in the amount of white space

   -B, --ignore-blank-lines
          ignore changes whose lines are all blank

   -c     use the context output format

   -C, --context=<n>
          same as -c but use <n> lines of context

   -d, --minimal
          try hard to find a smaller set of changes

   -E, --ignore-tab-expansion
          ignore changes due to tab expansion

   -i, --ignore-case
          ignore case differences in file contents

   -M, --format=<list>
          process only the formats in <list>

   -N, --no-rcfile
          don't read runtime configuration file

   -O, --force-format=[<f1>][,<f2>]
          force given formats (bz2, gz, lz, xz)

   -p, --show-c-function
          show which C function each change is in

   -q, --brief
          output only whether files differ

   -s, --report-identical-files
          report when two files are identical

   -t, --expand-tabs
          expand tabs to spaces in output

   -T, --initial-tab
          make tabs line up by prepending a tab

   -u     use the unified output format

   -U, --unified=<n>
          same as -u but use <n> lines of context

   -w, --ignore-all-space
          ignore all white space

   --bz2=<command>
          set compressor and options for bzip2 format

   --gz=<command>
          set compressor and options for gzip format

   --lz=<command>
          set compressor and options for lzip format

   --xz=<command>
          set compressor and options for xz format

REPORTING BUGS

   Report bugs to zutils-bug@nongnu.org
   Zutils home page: http://www.nongnu.org/zutils/zutils.html

COPYRIGHT

   Copyright  © 2016 Antonio Diaz Diaz.  License GPLv2+: GNU GPL version 2
   or later <http://gnu.org/licenses/gpl.html>
   This is free software: you are free  to  change  and  redistribute  it.
   There is NO WARRANTY, to the extent permitted by law.



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