The stad (short for SMB Traffic Analyzer Daemon) program collects incoming data from the vfs_smb_traffic_analyzer VFS module included in Samba 3.2.0 and later. Of the received data, it builds an SQL store that can be queried. The SMB traffic analyzer software suite is a toolset aiming at visualizing the data flow on one or more Samba servers, providing statistics about the usage of Samba services. The long term goal of the SMB Traffic Analyzer project is to provide a universal remote debugging facility for Samba.
Statsnet is a small set of scripts that will generate graphical statistics for a specific device. The statistics contain among other things, transmitted/received packets as well as bytes. In addition, it shows amount of currently tracked connections in the conntrack engine of netfilter.
stresslinux is a minimal Linux distribution that runs from a bootable CDROM or via PXE. It makes use of some utitlities such as stress, cpuburn, hddtemp, lm_sensors, etc. It is dedicated to users who want to test their system(s) entirely on high load and monitor the health of these systems.
sudosh can be used as a default login shell or a filter that takes advantage of PTY devices in order to sit between the user's keyboard and a program, in this case a shell. It was designed specifically to be used in conjunction with sudo, and allows the execution of a root or application shell with logging. It is basically a VCR and will record root shell sessions and also has the ability to play back the sessions as they were originally recorded. It records all input/output, keyboard input, and timing information so that the session can be played back in the original format.