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m4 macro processor

System command

Any program can be run by using the syscmd built-in:

   syscmd(date)
invokes the UNIX® operating system date command. Normally, syscmd would be used to create a file for a subsequent include.

To make it easy to name files uniquely, the built-in maketemp replaces a string of XXXXX in the argument with the process ID of the current process.


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