Department of Computing
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Imperial College
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X applications and utilities
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These are some of the applications and utilities
that can be run from the command line on the Linux systems.
These and other features may be available from the taskbar depending
on which window manager you use.
Applications
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xbiff
- The xbiff program displays a little image of a mailbox.
When there is no mail, the flag on the mailbox is down.
When mail arrives, the flag goes up and the mailbox beeps.
By default, pressing any mouse button in the image forces
xbiff to remember the current size of the mail file as being
the ``empty'' size and to lower the flag.
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xcalc
- Xcalc is a scientific calculator desktop accessory that can
emulate a TI-30 or an HP-10C.
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xclipboard
- The xclipboard program is used to collect and display text
selections that are sent to the CLIPBOARD by other clients.
It is typically used to save CLIPBOARD selections for later
use.
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xclock
- The xclock program displays the time in analog or digital
form. The time is continuously updated at a frequency which
may be specified by the user.
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xdvi
- Xdvi is a program which runs under the X window system. It
is used to preview DVI files, such as are produced by TeX.
This program has the capability of showing the file shrunken
by various (integer) factors, and also has a ``magnifying
glass'' which allows one to see a small part of the unshrunk
image momentarily.
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xedit
- A simple text editor.
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editres
- Editres is a tool that allows users and application developers
to view the full widget hierarchy of any X Toolkit
client that speaks the Editres protocol. In addition editres
will help the user construct resource specifications,
allow the user to apply the resource to the application and
view the results dynamically. Once the user is happy with a
resource specification editres will append the resource
string to the user's X Resources file.
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xeyes
- This is a mouse demonstration program. A pair of eyes track
your mouse around the desktop.
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xfontsel
- The xfontsel application provides a simple way to display
the fonts known to your X server, examine samples of each,
and retrieve the X Logical Font Description full
name for a font.
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xfig
- Xfig is a menu-driven tool that allows the user to draw and
manipulate objects interactively in an X window.
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xload
- The xload program displays a periodically updating histogram
of the system load average. Load is defined as the average number of
runnable processes on the system. In general, the higher the
load, the slower your processes will run.
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xlock
- xlock locks the X server till the user enters their password
at the keyboard. While xlock is running, all new server
connections are refused. The screen saver is disabled. The
mouse cursor is turned off. The screen is blanked and a
changing pattern is put on the screen. If a key or a mouse
button is pressed then the user is prompted for the password
of the user who started xlock.
This can be run from the
Start
menu.
-
xman
- Xman is a manual page browser. The default size of the initial
xman window is small so that you can leave it running
throughout your entire login session. In the initial window
there are three options: Help will pop up a window with
online help, Quit will exit, and Manual Page will pop up a
window with a manual page browser in it. You may pop up
more than one manual page browser window from a single
execution of xman.
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xterm
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The xterm program is a terminal emulator for the X Window
System. It provides DEC VT102 and Tektronix 4014 compatible
terminals for programs that can't use the window system
directly.
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xv
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The xv program displays images in the GIF, JPEG, TIFF,
PBM, PGM, PPM, X11 bitmap, Utah Raster Toolkit RLE,
PDS/VICAR, Sun Rasterfile, BMP, PCX, IRIS RGB, XPM, Targa,
XWD, possibly PostScript, and PM formats on workstations
and terminals running the X Window System.
Utilities
xwd
Xwd is an X Window System window dumping utility. Xwd
allows X users to store window images in a specially formatted
dump file. This file can then be read by various other
X utilities for redisplay, printing, editing, formatting,
archiving, image processing, etc. The target window is
selected by clicking the mouse in the desired window. The
keyboard bell is rung once at the beginning of the dump and
twice when the dump is completed.
xwud
Xwud is an X Window System image undumping utility. Xwud
allows X users to display in a window an image saved in a
specially formatted dump file, such as produced by xwd.
xmodmap
The xmodmap program is used to edit and display the keyboard
modifier map and keymap table that are used by client applications
to convert event keycodes into keysyms. It is usually run
from the user's session startup script to configure
the keyboard according to personal tastes.
xrdb
Xrdb is used to get or set the contents of the X resource Database,
these allow you to modify the look and feel of your display.
You would normally run this program from your X startup file.
xset
This program is used to set various user preference options
of the display, including mouse speed, bell pitch and duration,
autorepeat settings etc.
xsetroot
The setroot program allows you to tailor the appearance of
the background ("root") window on a workstation display running
X. Normally, you experiment with xsetroot until you
find a personalized look that you like, then put the
xsetroot command that produces it into your X startup file.