File management

Copy including hidden files

$ cp -r folder1/. target/

This is to set permission for an existing folder for collaboration. This assumes the group name to be dev, and the folder to be /srv/www/project.

This sets setgid bit on the folder.

$ sudo find /srv/www/project -type d -exec chgrp dev {} +
$ sudo find /srv/www/project -type d -exec chmod g+s {} +

Make it writable by the group.

$ sudo chmod -R g+w /srv/www/project

Change group ownership of existing files.

$ sudo chown -R mhan:dev /srv/www/project

These commands should be executed for a new folder.

$ sudo chgrp dev /srv/www/project
$ sudo chmod g+s /srv/www/project

The files are compressed using Lempel-Ziv (LZ77) algorithm. GNU zip (gzip/gunzip) is used for this.

$ gunzip file.gz

or

$ gzip -d file.gz