PURPOSE: The OUTPUT CHECK option allows checking of the status of output files. This command is valid in a CM, PM, SF and as a direct command.
{ENABLE; DISABLE} OUTPUT CHECK [{IF; UNLESS} clause]
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ENABLE |
causes ACCENT R to inform the user whether a specified output file or Data Set (DS) is new, empty, or contains data before executing any command that references it. A "N" or "NO" response causes the command to abort. A "Y" or "YES" response causes the command to execute. A carriage return in response defaults to a "YES" response. |
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DISABLE |
suppresses such checking and is the default condition. |
|
{IF; UNLESS} clause |
specifies certain criteria that must be met for the ENABLE or DISABLE command to take effect. |
*ENABLE OUTPUT CHECK
*SORT ON NUMBER TO SALES
DS file SALES.DS is empty, OK?Y
*ENTER
DS file SALES.DS is empty, OK?
:: 1
:: 2
:: 3
:: ***
*SORT ON NUMBER TO SALES
DS file SALES.DS has data, OK?Y
*SORT ON NUMBER TO SALES
DS file SALES.DS has data, OK?N
*Request to write DS SALES denied by user.