The watch command executes and re-executes a TCL command continuously until the user cancels the execution by pressing a key. The output of the first page of the specified TCL command is displayed on the screen continuously.
watch {n} tcl.command (options
| n | The number of seconds to sleep between command execution iterations. | |
| tcl,command | The TCL command to execute. | |
| options | The following options are supported: | |
| r | Resume watch history from last session. | |