15 lines
896 B
Text
15 lines
896 B
Text
The mcron program represents a complete re-think of the cron concept originally
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found in the Berkeley and AT&T unices, and subsequently rationalized by Paul
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Vixie. The original idea was to have a daemon that wakes up every minute, scans
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a set of files under a special directory, and determines from those files if
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any shell commands should be executed in this minute.
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The new idea is to read the required command instructions, work out which
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command needs to be executed next, and then sleep until the inferred time has
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arrived. On waking the commands are run, and the time of the next command is
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computed. Furthermore, the specifications are written in scheme, allowing at
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the same time simple command execution instructions and very much more flexible
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ones to be composed than the original Vixie format. This has several useful
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advantages over the original idea.
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WWW: http://rdmp.org/mcron/
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