Wait until a path exists
waitfor pathname [wait_time[:poll_ms]]
- The path to test.
- The maximum number of seconds to wait for the file to appear. It can include one decimal digit to specify tenths of a second. The default is 5.0 seconds.
- The number of milliseconds to wait between checks for the path. The default is 100 milliseconds.
The waitfor utility pauses temporarily until a stat() on the specified pathname succeeds. It's often used for synchronization, to allow a resource manager to perform its startup functionality, and then for the process manager to proceed with the further interpretation of the script file.