This is the command root-tail that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
root-tail - print text directly to X11 root window
SYNOPSIS
root-tail [-g|--geometry GEOMETRY] [-fn|--font FONTSPEC] [--color color] [--reload SEC
COMMAND] [--shade] [--outline] [--minspace] [--noflicker] [-f|--fork] [--reverse]
[--whole] [--partial] [--update] [--cont STRING] [--wordwrap] [--justify] [--noinitial]
[--frame] [-id ID] [-i|--interval SECONDS] [-V] file1[,color[,desc]]
[file2[,color[,desc]]]
DESCRIPTION
Displays a given file anywhere on your X11 root window, i.e. it is kind of tail -f for
multiple files using your desktop background as output window.
All non-option arguments on the command line are files to be logged. A null desc (example:
"/var/log/messages,red,") will prevent the printing of a description and the []'s.
General Options
--color COLOR
Use COLOR as default.
--font | -fn FONTSPEC
Use font FONTSPEC. This can be either a fixed width font like -fn fixed or any font
using -fn '-*-*-*-*-*-*-*-*-*-*-*-*-*-*' with the appropriate fields filled out
(see xfontsel). Specifying a different FONTSPEC before each filename will cause
each file to be displayed in a different font.
-f | --fork
Forks to the background.
--reverse
Display the files in reverse order, with the newest lines at the top.
--whole
Only display whole lines. If the last line of a file doesn't yet end with a newline
character then wait until it does before displaying it. This is the default if more
than one file is being displayed.
--partial
This is the opposite of the --whole option (see above). It displays lines even if
they don't yet have a newline at the end. This is the default if only one file is
being displayed.
--update
Update partial lines 'in place' if they are still on the screen when they are
updated in their files. Using --update automatically turns on --partial.
--cont STRING
When partial lines are broken into two lines in the display, prefix the 2nd line
with STRING. Defaults to "|| ". Specify the "--whole" argument to ensure partial
lines are never displayed, or specify "--update" to attempt to "repair" broken
lines in-place.
--cont-color COLOR
Use COLOR when displaying the continuation string (as optionally specified with the
--cont option above).
--wordwrap
The default behaviour is to fit as much as possible onto each line of output, even
if this means splitting a word between one line and the next. The --wordwrap
argument splits lines at spaces if possible.
--justify
After wrapping long lines, attempt to justify the text to produce a smooth right-
hand margin. Implies --wordwrap.
--reload SEC COMMAND
Re-display the file(s) and run COMMAND every SEC seconds. The default is to never
re-display the file(s).
--shade
Add black shading to the font.
--outline
Add a black outline to the font (making redraws quite a bit slower).
--minspace
Use minimum linespace even when using shading or outlining. This might result in
leftover pixels (dependign on font and logfile content).
--noflicker
Use slower but flicker-free update.
--noinitial
Don't display the end of the file(s) initially.
-id ID Use the given window ID for output instead of the root window.
-i | --interval SECONDS
Use the specified sleeping interval between checks instead of the default 2.4
seconds. Fractional values are OK.
-V Print version information.
--frame
Draw a frame around the selected area. This is useful when trying to find the
perfect geometry.
EXAMPLE
root-tail -g 800x250+100+50 -font 10x20 /var/log/messages,green -font 12x24
/var/log/secure,red,'ALERT'
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