Basic Examples (7) 

Check if a process is currently running using a process ID:

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Check if a process is running by name (results may be platform-dependent):

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Check if a ProcessObject is running:

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Close the process:

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Verify that it’s no longer running:

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Check if a TaskObject is running:

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Check again after it has finished:

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Check if a stream is open:

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Use string patterns:

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Use an association of properties:

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Scope (7) 

Check if a scheduled task deployed to the cloud is currently following its assigned schedule:

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A task is not considered to be running if it is suspended:

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TaskResume the task:

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Check if a WebSessionObject is running:

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Close the session using DeleteObject:

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Verify that it’s no longer running:

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Check if an ExternalSessionObject is running:

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Close the session using DeleteObject:

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Verify that it’s no longer running:

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Check that parallel subkernels are still running:

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Close one of the kernels:

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Verify that one of the kernels is no longer running:

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Check that a LinkObject is still running (this example requires the ability to launch new kernels with LinkLaunch on the current machine):

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Get the $ProcessID of the linked kernel:

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Check that it’s running by using the PID:

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Close the link using LinkClose:

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Verify that it’s no longer running:

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Check using the PID:

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Processes do not need to be started by the current kernel:

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Use the PID of a random system process:

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Properties and Relations (2) 

When patt is a string pattern, ProcessRunningQ[patt] is equivalent to MatchQ[SystemProcesses[patt],{__ProcessObject}]:

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The same is true for rules:

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Possible Issues (6) 

A LinkObject may still be reported as running if it appears in Links[] even if the connected process has been terminated:

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Get the PID:

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Get the corresponding ProcessObject:

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Terminate the process with KillProcess instead of LinkClose:

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The LinkObject is still active:

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However, the process itself is not:

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