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Aucbvax.2738 fa.unix-wizards utzoo!decvax!ucbvax!unix-wizards Tue Aug 18 08:57:32 1981 lpd lock file >From dsp.dove@MIT-SPEECH@MIT-AI Tue Aug 18 08:52:50 1981 A better way of making a lock file is to have lpd make a dummy with its pid, clear all write bits, and link it as the lockfile. Then arrange for the lpd to ignore some specific signal. To find out if a given lockfile has an associated lpd just read the lockfile, signal that proc with the ignored signal and see if it succeeds.

Why couldn't this work for the rand editor?

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