[TUHS] unix v5 limitations
jnc at mercury.lcs.mit.edu
Sun Aug 10 01:32:02 AEST 2014
> From: Mark Longridge <cubexyz at gmail.com>
> The first problem I had was I couldn't just cp over all the
> /usr/source/s1 files to the new drive because of "Arg list too long"
John Cowan nailed this; as an aside, I don't know about V5, but in vanilla V6
the entire argument list had to fit into one disk buffer (I would assume V5 is
The PWB changes to v6 included a rewrite of exec() to accumulate the argument
list in swap space, so it could be much longer; the maximum length was a
parameter, NCARGS, which was set to 5120 (10 blocks) by default.
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