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From: | Doug McIlroy |
Subject: | Re: [Groff] [PATCH] Use bash for several contrib scripts |
Date: | Fri, 03 Jan 2014 10:45:25 -0500 |
User-agent: | Heirloom mailx 12.5 7/5/10 |
I must be missing something in the discussion about random numbers. Why does groff need them? In the offered example tmp="$d/eqn2graph$groff_rand" the "random number" serves only to make a (supposedly) unique name. But of course, if the number is truly random, it is not guaranteed to be unique. Why does groff not use the time-honored $$ to serve the purpose? The only requirement for an absolute guarantee of uniqueness is that the shell script whose pid $$ represents lives as long as the temporary file. Doug McIlroy
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