cpgr

cpgr [options] source destination

source
    The file or directory to be copied.

destination
    The destination directory where the file or directory will be copied.

-R or -r
    Recursively copy directories. Required for copying directories. May vary according to script implementation.

-p
    Preserve permissions. May vary according to script implementation.

[--other cp options]
    Other options of the cp command, supported if the script uses the cp command internally. May vary according to script implementation.

The `cpgr` command, while not a standard Linux utility found in most distributions, is likely a custom script or alias designed to copy files or directories while ensuring that the group ownership of the copied items is set to the group ownership of the *destination* directory.

Standard `cp` command preserves group membership of the *source* files, potentially leading to permission issues in collaborative environments. `cpgr` addresses this by explicitly setting the group ownership to the group of the directory where the copy is placed. This is particularly useful in shared directories where multiple users or processes need to access copied data under the same group context.

The behavior of `cpgr` ensures that files and directories created in a collaborative space correctly inherit the required group permissions for access and modification. This prevents unauthorized access and ensures proper functionality within the given environment. The exact implementation details depend on how the script is written, but the core purpose is group ownership management during file copying.

Since `cpgr` is likely a custom script, its functionality and available options might differ depending on the implementation. Always check the script's source code or documentation to understand its exact behavior. Its existence depends on the environment where it is present.

Copying a file to a shared directory:
cpgr myfile.txt /shared/directory/
This copies `myfile.txt` to `/shared/directory/` and sets its group ownership to the group ownership of `/shared/directory/`.

Copying a directory recursively:
cpgr -R mydirectory /shared/directory/
Copies `mydirectory` and all its contents to `/shared/directory/`, ensuring all copied items have the same group ownership as `/shared/directory/`.

A common implementation of `cpgr` might involve using the standard `cp` command followed by a `chgrp` command to change the group ownership. The script would typically extract the group ID from the destination directory and apply it to the copied files/directories.

cp(1), chgrp(1), chmod(1), chown(1)