xclock - analog / digital clock for X
xclock [ -help ] [ -analog | -digital
] [ -brief ] [ -chime ] [ -hd color ] [
-hl color ] [ -update seconds ] [
-strftime format ] [ -twelve | -twentyfour |
-utime ] [ -padding number ] [ -norender ] [
-render ] [ -sharp ] [ -face pattern ]
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.
Xclock accepts all of the standard X Toolkit command line
options along with the additional options listed below:
- -help
- This option indicates that a brief summary of the allowed options should
be printed on the standard error.
- -analog
- This option indicates that a conventional 12 hour clock face with tick
marks and hands should be used. This is the default.
- -digital or
-d
- This option indicates that a 24 hour digital clock should be used.
- -brief
- This option indicates that the digital clock should only display the hours
and minutes fields. The default is to show the full time and date
information.
- -utime
- This option indicates that a digital clock should display seconds since
the Epoch (in format '970012340 seconds since Epoch' instead of a standard
24-hour time.
- -strftime
format
- This option allows an strftime(3) format string to be specified for the
digital clock's display.
- -twelve
- This option indicates that a digital clock should display the time in
twelve hour format.
- -twentyfour
- This option indicates that a digital clock should display the time in
twenty-four hour format. This is the default when a digital clock is
used.
- -chime
- This option indicates that the clock should chime once on the half hour
and twice on the hour.
- -hands color
(or -hd color)
- This option specifies the color of the hands on an analog clock. The
default is black. This option is effectively ignored when Xrender
is in use.
- -highlight
color (or -hl color)
- This option specifies the color of the edges of the hands on an analog
clock, and is only useful on color displays. The default is black.
This option is effectively ignored when Xrender is in use.
- -update
seconds
- This option specifies the frequency in seconds at which xclock
should update its display. If the clock is obscured and then exposed, it
will be updated immediately. A value of 30 seconds or less will enable a
second hand on an analog clock. The default is 60 seconds.
- -padding
number
- This option specifies the width in pixels of the padding between the
window border and clock text or picture. The default is 10 on a digital
clock and 8 on an analog clock.
- -render
- This option tells xclock to use the Xrender extension to draw an
anti-aliased face. This is the default if xclock has been compiled
with Xrender support. Note that the color selection options and resources
used when Xrender is in effect differ from the standard options.
- -norender
- This option turns off the use of Xrender to draw the clock.
- -sharp
- This option tells xclock to use sharper edges when drawn using the
Xrender extension.
- -face
pattern
- This option specifies the font to use in digital mode when the Xrender
extension is used. Patterns are specified using the fontconfig face format
described in the Font Names section of fonts.conf(5).
This program uses the Clock widget. It understands all of
the core resource names and classes as well as:
- width (class
Width)
- Specifies the width of the clock. The default for analog clocks is 164
pixels; the default for digital clocks is whatever is needed to hold the
clock when displayed in the chosen font.
- height (class
Height)
- Specifies the height of the clock. The default for analog clocks is 164
pixels; the default for digital clocks is whatever is needed to hold the
clock when displayed in the chosen font.
- update
(class Interval)
- Specifies the frequency in seconds at which the time should be
redisplayed.
- foreground
(class Foreground)
- Specifies the color for the tick marks. The default depends on whether
reverseVideo is specified. If reverseVideo is specified the
default is lwhite, otherwise the default is black.
- hands
(class Foreground)
- Specifies the color of the insides of the clock's hands. The default
depends on whether reverseVideo is specified. If
reverseVideo is specified the default is lwhite, otherwise
the default is black. Note that this resource is not used when
Xrender is in effect.
- highlight
(class Foreground)
- Specifies the color used to highlight the clock's hands. The default is
depends on whether reverseVideo is specified. If reverseVideo
is specified the default is lwhite, otherwise the default is
black. Note that this resource is not used when Xrender is in
effect.
- analog (class Boolean)
- Specifies whether or not an analog clock should be used instead of a
digital one. The default is True.
- twentyfour (class Boolean)
- Specifies whether or not a digital clock should display the time in
twenty-four hour format. The default is True.
- chime (class Boolean)
- Specifies whether or not a bell should be rung on the hour and half
hour.
- padding
(class Margin)
- Specifies the amount of internal padding in pixels to be used. The default
is 8.
- font (class
Font)
- Specifies the font to be used for the digital clock. Note that variable
width fonts currently will not always display correctly. This font is only
used when Xrender is not in effect.
- render (class Boolean)
- Specifies whether or not the Xrender extension should be used for the
display. The default is True if xclock has been compiled with
Xrender support.
When Xrender is in effect, the following additional resources are
understood:
- face (class
FaceName)
- Specify the pattern for the font to be used for the digital clock when
Xrender is used. Patterns are specified using the fontconfig face format
described in the Font Names section of fonts.conf(5).
- sharp (class Boolean)
- Specifies if sharp edges should be used when rendering the clock. The
default is False.
- buffer (class
Boolean)
- Specifies that the updates of the image are drawn to a pixmap before
copied into the window instead drawing them into the window directly.
The defaults of the following color resources depend on whether
reverseVideo is specified. If reverseVideo is specified the
default is lwhite, otherwise the default is black.
- hourColor
(class Foreground)
- The color of the hour hand.
- minuteColor
(class Foreground)
- The color of the minute hand.
- secondColor
(class Foreground)
- The color of the second hand.
- majorColor
(class Foreground)
- The color of the major scale ticks (i. e. each five minutes).
- minorColor
(class Foreground)
- The color of the minor scale ticks (between major ticks).
In order to specify resources, it is useful to know the hierarchy
of the widgets which compose xclock. In the notation below,
indentation indicates hierarchical structure. The widget class name is given
first, followed by the widget instance name.
XClock xclock
Clock clock
- DISPLAY
- to get the default host and display number.
- XENVIRONMENT
- to get the name of a resource file that overrides the global resources
stored in the RESOURCE_MANAGER property.
- /etc/X11/app-defaults/XClock
- specifies required resources
Xclock believes the system clock.
When in digital mode, the string should be centered
automatically.
Tony Della Fera (MIT-Athena, DEC)
Dave Mankins (MIT-Athena, BBN)
Ed Moy (UC Berkeley)