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direnv is an environment switcher for the shell. It knows how to hook into bash, zsh, tcsh and fish shell to load or unload environment variables depending on the current directory. This allows to have project-specific environment variables and not clutter the "~/.profile" file.

This is a network-based backup system based of rync. It can do full and incremental backups to a remote file server. It relies on rsync for the host to host copy and uses hard links to provide multiple snapshots of the data without duplicating identical files.

Convenience tools for manipulating disk images such as ISOs and flash drive install images.

`disktool' is an XView program to monitor up to 64 filesystems simultaneously and alert you when a particular filesystem is low on space. disktool is set-up to "un-iconify" when a filesystem it is monitoring has reached its' user-definable "critical threshold". A Unix command can also be initiated when this threshold is reached. The command and un-iconifying can be repeated every so many polls, configurable from the cmdline or from the Properties pop-up. The properties pop-up is obtained by selecting any gauge with the right mouse button. The middle mouse button has also been mapped to force a filesystem poll to update the displayed data. `disktool' is a good sysadmin tool for monitoring diskfull situations to avoid datafile corruption.

djmount is a UPnP AV client. It mounts as a Linux filesystem the media content of compatible UPnP AV devices. Djmount discovers automatically all UPnP AV Media Servers on the network, and make the content available in a directory tree. All shared files (e.g. Audio or Video files) are directly visible and can be played using your favorite media player. djmount is written in C for the Linux operating system. It is free software, licensed under the terms of the GNU General Public License (GNU GPL).

Dmidecode is a tool or dumping a computer's DMI (some say SMBIOS) table contents in a human-readable format. The output contains a description of the system's hardware components, as well as other useful pieces of information such as serial numbers and BIOS revision.

Docker is an open source project to pack, ship and run any application as a lightweight container. Docker containers are both hardware-agnostic and platform-agnostic. This means they can run anywhere, from your laptop to the largest EC2 compute instance and everything in between - and they don't require you to use a particular language, framework or packaging system. That makes them great building blocks for deploying and scaling web apps, databases, and backend services without depending on a particular stack or provider.

[ excerpt taken from distfile's README ] Dolly is used to clone the installation of one machine to (possibly many) other machines. It can distribute image-files (even gnu-zipped), partitions or whole hard disk drives to other partitions or hard disk drives. As it forms a "virtual TCP ring" to distribute data, it works best with fast switched networks (we were able to clone a 2 GB Windows NT partition to 15 machines in our cluster over Gigabit Ethernet in less than 4 minutes). As dolly clones whole partitions block-wise it works for most filesystems. We used it to clone partitions of the following type: Linux, Windows NT, Oberon, Solaris (most of our machines have multi boot setups). We have a small (additional) Linux installation on all of our machines or use a small one-floppy-disk-linux (e.g. muLinux) to do the cloning. On newer machines we use PXE to boot a small system in a RAM disk. From that system we then clone the hard disks in the machines.

downtimed is a program that monitors operating system downtime, uptime, shutdowns and crashes and keeps records of those events. downtimed(8) is a daemon process which is intended to be started automatically from system boot scripts every time when the operating system of a server starts. First the daemon logs its findings about the previous downtime to a specified logging destination as well as in a database file which can be displayed with downtimes(1). After that the daemon just keeps waiting in the background and periodically updates a time stamp file on the disk. downtimes(1) is a command-line tool which can be used to inspect previous downtime records.

DSBBatmon is a GTK+ battery monitor for FreeBSD. It displays the battery's current status, capacity, and remaining time. It warns the user if the battery capacity is low, and can automatically shut down the system if a critical capacity is reached.