Goffi's cp, a fancy file copier
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gcp is a user-friendly file copier written in Python. Its name used to stand
for "Goffi's CoPier", but was changed into a recursive acronym: Gcp CoPier.
gcp is free software: you can redistribute it and/or modify it under the terms
of the GNU General Public License as published by the Free Software Foundation,
either version 3 of the License, or (at your option) any later version.
gcp is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a [copy of the GNU General Public License](LICENSE)
along with gcp. If not, see <http://www.gnu.org/licenses/>.
gcp is a file copier, loosely inspired from cp, but with high level
functionalities such as:
- **Progress bar.**
- gcp **keeps copying** even when there is an issue: it just skips the file,
logs an error and goes on.
- **Logging**: gcp writes what it's doing to a log file; this allows you to
know which files were effectively copied.
- **Fixing file names** to be compatible with the target filesystem (e.g.
removing incompatible chars like `?` or `*` on FAT).
- **Queue**: if you launch a copy when another copy is already running, the
files are added to the first queue; this optimizes hard drive head movement
and filesystem fragmentation.
- **Files saving**: you can keep track of the files you have copied, and copy
them again later (useful when, for example, you copy some free music to your
friends on a regular basis).
- gcp will be **approximately option-compatible with (GNU) cp** (approximately
because the behaviour is not exactly the same, see below).
**WARNING**: gcp is at a relatively early stage of development, use at your own
The Python way
First, install the following packages on your system (these Debian packages
names, they may be different on other distros/systems):
- libdbus-1-dev
- libdbus-glib-1-dev
- libgirepository1.0-dev
- libcairo2-dev
- python3-cairo-dev
Then install gcp with pip:
pip3 install gcp
On Debian-based systems
apt install gcp
How to use it?
Pretty much like cp (see `gcp --help` and `man gcp`).
Please note that the behaviour is not exactly the same as cp's, even if gcp
aims to be option-compatible. Mainly, the destination filenames can be modified
(cf. the `--fix-filenames` option).
gcp doesn't implement all the options GNU cp has yet, but it's a long-term
The log file is aimed to be used by gcp itself, buts remains human-readable. It
is located in `~/.gcp/journal`.
3 states are used:
- **OK** means the file was copied and all operation were successful.
- **PARTIAL** means the file was copied, but something went wrong (file
permissions could not be preserved, file name had to be changed, etc.).
- **FAILED**: the file was *not* copied.
After the state, a list of things that went wrong is shown, separated by ", ".
Contribution ideas
Here are some ideas for future developments:
- handle XDG
- copy queue management (moving copy order)
- advanced console interface
- notification (XMPP and maybe email) when a long copy is finished
- retry for files that were not correctly copied
- badly encoded unicode filenames fix
- file copy integrity check
And in an even more distant future:
- graphic interface
- desktop (Kde, Gnome, XFCE...) integration
- distant copy (FTP)
- basic server mode, for copying files on network without the need of NFS or
other heavy stuff
A big big thanks to the authors/contributors of...
* **progressbar**:
gcp uses [ProgressBar](https://pypi.python.org/pypi/progressbar), a class
coded by Nilton Volpato that allows the textual representation of
* **GLib**:
This heavily used library is used here for the main loop, event catching, and
for DBus. Get it at <https://developer.gnome.org/glib/>.
* **DBus**:
This excellent IPC is ut the heart of gcp. Get more information at
* **Python** and its amazing standard library:
gcp was coded quickly for my own needs thanks to this excellent and efficient
language and its really huge standard library. Python can be download at
If I forgot any credit, please contact me (email below) to fix that.
Big thanks to contributors and package maintainers.
* Original author: Jérôme Poisson a.k.a. Goffi <goffi@goffi.org> 2010-2011.
* Thomas Preud'homme <robotux@celest.fr> 2011: manpage, stat resolution fix.
* Jingbei Li a.k.a. petronny 2016: conversion to Python3.
* Matteo Cypriani <mcy@lm7.fr> 2018: `--fix-filenames` option, Python3 fixes.
Feedback, bug reports, patches, etc. are welcome, either by email or on the
repository's issue tracker <https://code.lm7.fr/mcy/gcp/issues>.
You can also have a look at Goffi's other main project, [Salut à
Toi](https://www.salut-a-toi.org/) (SàT), a Jabber/XMPP-based multi-frontend,
multipurpose communication tool.
Don't hesitate to give feedback :)