Screen is a full-screen window manager that multiplexes a physical terminal
between several processes (typically interactive shells).
Each virtual terminal provides the functions of a DEC VT100 terminal and, in
addition, several control functions from the ANSI X3.64 (ISO 6429) and ISO
2022 standards (e.g. insert/delete line and support for multiple character
sets). There is a scrollback history buffer for each virtual terminal and a
copy-and-paste mechanism that allows moving text regions between windows.
The historical, and still very useful process-locking program. Use to
make sure that your shell script is the only version of itself running
on your system. There are many other creative ways to use this program.
vordog is a collection of a driver and a user space daemon for FreeBSD to
leverage watchdog timer of Vortex86 SoC . vordog is also watchdog(9)
compatible. It is as a timer source of watchdog(9), you can use it with
watchdog(4), watchdog(8), and watchdogd(8).
You can get vordog from repository with Mercurial.
Spinner is a small program that displays a little "spinning" ASCII
character in the top left corner of your terminal. To make this effect
it cycles through punctuation marks like this " - \ | / - \ | / ... "
(try it to see). By default the character is drawn in inverse video
(or your terminal's equivalent). But you can turn this off with the -i
switch. It supports any terminal capable of handling VT100 style escape codes.
Spinner is useful for keeping telnet and ssh links from dropping due to
inactivity. Many firewalls, and some ISPs drop connections when they are
perceived as idle. By having spinner running the server is constantly
sending a tiny amount of data over the link, preserving the connection.
Thus (for search engines) Spinner is an anti-dle, timeout preventing,
background daemon process for Unix variants including Linux.
- Michael L. Hostbaek
mich@FreeBSD.org
Spiped (pronounced "ess-pipe-dee") is a utility for creating symmetrically
encrypted and authenticated pipes between socket addresses, so that one may
connect to one address (e.g., a UNIX socket on localhost) and transparently
have a connection established to another address (e.g., a UNIX socket on a
different system). This is similar to 'ssh -L' functionality, but does not
use SSH and requires a pre-shared symmetric key.
wmcube-gdk is a modified version of wmCube that features much faster
redraws, significantly lower CPU usage, ability to specify color
for both flat-shaded and wireframe objects, and transparent CPU
load / zoom buttons. The roll in sequence of the original wmCube
has been removed.
This is GNU Stow, a program for managing the installation of software
packages, keeping them separate (/usr/local/stow/emacs
vs. /usr/local/stow/perl, for example) while making them appear to be
installed in the same place (/usr/local).
Stow was inspired by Carnegie Mellon's "Depot" program, but is
substantially simpler. Whereas Depot requires database files to keep
things in sync, Stow stores no extra state between runs, so there's
no danger (as there is in Depot) of mangling directories when file
hierarchies don't match the database. Also unlike Depot, Stow will
never delete any files, directories, or links that appear in a Stow
directory (e.g., /usr/local/stow/emacs), so it's always possible to
rebuild the target tree (e.g., /usr/local).
XCPUSTATE is a system monitor tool. It displays user-, system-,
idle-cputime in the form of a bar chart. On some systems it also
monitors disk performance.
It can also display information about remote hosts using the RSTAT RPC
protocol, as perfmeter does.
System-tools-backends is a collection of scripts (mostly Perl) used by
gnome-system-tools to perform system administration tasks.
tren is a general purpose file and directory renaming tool. Unlike
commands like mv, tren is particularly well suited for renaming
batches of files and/or directories with a single command line
invocation. tren eliminates the tedium of having to script simpler
tools to provide higher-level renaming capabilities.