ON(1): notify the user or run commands when files or user status change
USAGE
usage: on [-1Du] file [cmd...]
-1: terminate after the first change
-D: debug
-u: don't use unix out
file may be 'user', 'idle', 'busy' and 'wakeup'
to run the command when the user becomes...
DESCRIPTION
On watches for file system or user status changes and runs a command when such event happens. If no command is given the changed file name, or the new user status, is printed. When a command is given, the command is executed with any "%" sign replaced with the name for the
changed file or the new user status.
If the file is a directory it is considered as changed when either the directory or its contents change. But there is no recursion to sub-directories.
When file is idle or
busy the command is run when the user becomes
idle or ceases being idle. When file is
wakeup the command runs when the terminal
resumes from sleep. When file is
user the command runs upon any of these
events.
EXAMPLES
-
Useful to run when editing sources:
; on . Inst -v
Or perhaps
; on . Test -v
Synchronize replicas when resuming from sleep:
; on wakeup zxsync -v
SOURCE
/zx/sys/src/clive/cmd/on
