screen: Backtick
20.22 Backtick
==============
-- Command: backtick ID LIFESPAN AUTOREFRESH COMMAND [ARGS]
-- Command: backtick ID
(none)
Program the backtick command with the numerical id ID. The output
of such a command is used for substitution of the '%`' string
escape (⇒String Escapes). The specified LIFESPAN is the
number of seconds the output is considered valid. After this time,
the command is run again if a corresponding string escape is
encountered. The AUTOREFRESH parameter triggers an automatic
refresh for caption and hardstatus strings after the specified
number of seconds. Only the last line of output is used for
substitution.
If both the LIFESPAN and the AUTOREFRESH parameters are zero, the
backtick program is expected to stay in the background and generate
output once in a while. In this case, the command is executed
right away and screen stores the last line of output. If a new
line gets printed screen will automatically refresh the hardstatus
or the captions.
The second form of the command deletes the backtick command with
the numerical id ID.
Info Catalog
screen: Maxwin
screen: Miscellaneous
screen: Screen Saver