Unable to Delete File via File Delete Adapter

Clarify Scenario:
In a Cleo Clarify Business Process, we are trying to delete a LInux file via a Clarify Delete Adapter
Note: We created the Delete Adapter using various values to identify the filename.
Clarify Issue:
For some reason Cleo Clarify identifies the file, but it does not delete the file.
Clarify Business Process Errors:
Below are the scenarios we tested using the actual filename and wildcard values.
Scenario 1.
2019-12-19 09:18:17,694 [INFO ] - Getting the File System connection from the FS Resource Adapter...
2019-12-19 09:18:17,694 [INFO ] - File URL: file:/gfs/tst/data/ediServices/clarify/caCustomer/tradingPartner/DeltaChefTek/outbox/
2019-12-19 09:18:17,694 [INFO ] - Executing the File System Adapter Interaction...
2019-12-19 09:18:17,694 [DEBUG] - [FSInteraction Instance:][execute] Entering method
2019-12-19 09:18:17,694 [INFO ] - [FSInteraction : ] Executing a DELETE operation...
2019-12-19 09:18:17,694 [INFO ] - Creating Filename Filter using: .*.
2019-12-19 09:18:17,694 [DEBUG] - [execute] Leaving method
2019-12-19 09:18:17,694 [PERSISTENT] - Ending Interface Adapter invocation.
2019-12-19 09:18:17,694 [PERSISTENT] - Completed Task.
Scenario 2:
2019-12-19 09:17:18,631 [INFO ] - Getting the File System connection from the FS Resource Adapter...
2019-12-19 09:17:18,631 [INFO ] - File URL: file:/gfs/tst/data/ediServices/clarify/caCustomer/tradingPartner/DeltaChefTek/outbox/
2019-12-19 09:17:18,631 [INFO ] - Executing the File System Adapter Interaction...
2019-12-19 09:17:18,631 [DEBUG] - [FSInteraction Instance:][execute] Entering method
2019-12-19 09:17:18,631 [INFO ] - [FSInteraction : ] Executing a DELETE operation...
2019-12-19 09:17:18,631 [INFO ] - Creating Filename Filter using: *.*
2019-12-19 09:17:18,631 [ERROR] - Error executing adapter : Dangling meta character '*' near index 0
*.*
^
2019-12-19 09:17:18,631 [ERROR] - java.util.regex.PatternSyntaxException: Dangling meta character '*' near index 0
*.*
Scenario 3:
2019-12-19 09:12:54,906 [INFO ] - Getting the File System connection from the FS Resource Adapter...
2019-12-19 09:12:54,906 [INFO ] - File URL: file:/gfs/tst/data/ediServices/clarify/caCustomer/tradingPartner/DeltaChefTek/outbox/
2019-12-19 09:12:54,906 [INFO ] - Executing the File System Adapter Interaction...
2019-12-19 09:12:54,906 [DEBUG] - [FSInteraction Instance:][execute] Entering method
2019-12-19 09:12:54,906 [INFO ] - [FSInteraction : ] Executing a DELETE operation...
2019-12-19 09:12:54,906 [INFO ] - Creating Filename Filter using: C24892.csv
Scenario 4:
2019-12-20 05:49:08,028 [INFO ] - Getting the File System connection from the FS Resource Adapter...
2019-12-20 05:49:08,028 [INFO ] - File URL: file:/gfs/tst/data/ediServices/clarify/caCustomer/tradingPartner/DeltaChefTek/outbox/
2019-12-20 05:49:08,028 [INFO ] - Executing the File System Adapter Interaction...
2019-12-20 05:49:08,028 [DEBUG] - [FSInteraction Instance:][execute] Entering method
2019-12-20 05:49:08,028 [INFO ] - [FSInteraction : ] Executing a DELETE operation...
2019-12-20 05:49:08,028 [INFO ] - Creating Filename Filter using: .*\.*
2019-12-20 05:49:08,039 [DEBUG] - [execute] Leaving method
Clarify Resolution:
To resolve this issue, we called a Linux OS command from the Clarify Business Process.
By: Sean Hoppe on