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Description:

pnudcmp 1.0.1

Installation
Depending on if you want only this tool, the full set of PNU tools, or PNU plus a selection of additional third-parties tools, use one of these commands:
pip install pnu-dcmp

pip install PNU

pip install pytnix
DCMP(1)
NAME
dcmp - compare two directories, deduplicating if needed
SYNOPSIS
dcmp
[--dedup]
[-h|--nosymlinks]
[-s|--silent|--quiet]
[-v|--verbose]
[--debug]
[--help|-?]
[--version]
[--]
directory1 directory2
DESCRIPTION
The dcmp utility compares two directories contents and writes the results to the standard output.
By default, dcmp is silent if the directories are the same;
if they differ, the differences are reported with a leading:

'!' if files contents are different
'+' if the file or directory appears in directory1 but not in directory2
'-' if the file or directory appears in directory2 but not in directory1
'=' if the files contents are identical and you used the -v|--verbose option

If you use the -s|--silent|--quiet option, differences won't be reported and the overall result will be returned though the exit status
(thus stopping the comparison at the first difference).
By default, dcmp follows symbolic links to directories, unless you tell it not to do so with the -h|--nosymlinks option,
or you use the --dedup option for deduplicating the first directory, removing identical files
(ie. those having the same SHA-256 message digest) and symbolic links, as well as empty directories sitting there.
OPTIONS
The following options are available:

Options
Use

--dedup
In dir1, remove empty dirs and files which are identical to those in dir2

-h|--nosymlinks
Do not follow symbolic links

-s|--silent|--quiet
Print nothing for differing dirs; return exit status only

-v|--verbose
Print identical dirs and files names

--debug
Enable debug mode

--help|-?
Print usage and a short help message and exit

--version
Print version and exit

--
Options processing terminator

ENVIRONMENT
The DCMP_DEBUG environment variable can also be set to any value to enable debug mode.
EXIT STATUS
The dcmp utility exits with one of the following values:

0: The directories are identical
1: The directories are different
>1: An error occurred

SEE ALSO
cmp(1),
sha256(1)
STANDARDS
The dcmp utility is not a standard UNIX command.
This implementation tries to follow the PEP 8 style guide for Python code.
PORTABILITY
To be tested under Windows.
HISTORY
This implementation was made for the PNU project.
The dcmp utility was made to help spot potential differences between restored backups and current files and directories.
LICENSE
It is available under the 3-clause BSD license.
AUTHORS
Hubert Tournier