watch
Command Function
This command is used to periodically monitor the execution result of a command.
Syntax
watch
watch [-c/-n/-t/--count/--interval/-no-title/--over] [command]
Parameters
Table 1 Parameter description
Parameter
|
Description
|
Default Value
|
Value Range
|
|---|
-c / --count
|
Specifies the number of times that the command is executed.
|
0xFFFFFF
|
(0, 0xFFFFFF]
|
-n / --interval
|
Specifies the interval for periodically running the command, in seconds.
|
1s
|
(0, 0xFFFFFF]
|
-t / -no-title
|
Disables time display on the top.
|
N/A
|
N/A
|
command
|
Specifies the command to be monitored.
|
N/A
|
N/A
|
--over
|
Stops the current command monitoring.
|
N/A
|
N/A
|
Usage
You can run the watch --over command to stop the currently running command monitoring.
Example
Example:
watch -n 2 -c 6 task
Output Description
Figure 1 task command monitoring result
NOTE:
In this example, the task command has been executed every 2 seconds for six times, and the preceding figure shows the output of the last execution.