upnp2mrtg is a simple add-on for the MRTG (Multi Router Traffic Grapher). It can be used to monitor incoming and outgoing bytes of the external interface of the FritzBox DSL router. upnp2mrtg is a command line tool to gather statistics from an upnp enabled FritzBox DSL router. It is a lightweight shell-script for use with MRTG, so no underlying external software (with the exception of netcat) or libraries are required. Using bash-networking instead of netcat is also supported.
upsguru is a daemon that monitors a UPS connected to a serial port. It has been extensively tested with a rebadged Centralion UPS. It communicates with init via the /dev/ initctl FIFO in order to control system services in the event of a power failure. The sample scripts include commands for SMS notification using gnokii. Protocol details are also contained in the archive.
usb4java is a Java library for accessing USB devices. The low-level part is based on the native libusb 0.1 shared library and reflects this API as completely as possible. Java NIO buffers are used for data exchange between libusb and Java. The high-level part implements the javax.usb standard (JSR-80). Supported platforms are Linux (x86 32/64 bit), Mac OS X (x86 32/64 bit, PowerPC 32 bit) and Windows (x86 32/64 bit), but other platforms supported by Java 6 and libusb may work by compiling the JNI library manually.
userchroot is a small program which, in addition to doing a regular chroot, will also switch working directory once in chroot and drop privileges back to pre-suid values. It is intended to ease constructing chrooted user-driver services (running stfp-server in a restricted namespace for example). In order to conserve system resources, it is implemented in C. This makes it more suitable for higher load scenarios than scripts.
Userinfo is a console utility to display a variety of information about a local user. It uses loadable modules to perform different tasks, which separate the output with a field deliminator. Some may find it useful in shell scripts to gather information that might be tedious by other methods.