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man: Additional info on exit statuses.

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Alasdair G Kergon 2016-09-07 01:57:09 +01:00
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man/lvm.8.in
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@ -744,6 +744,11 @@ without % suffix), string.
.SH DIAGNOSTICS
.
All tools return a status code of zero on success or non-zero on failure.
The non-zero codes distinguish only between the broad categories of
unrecognised commands, problems processing the command line arguments
and any other failures. As LVM remains under active development, the
code used in a specific case occasionally changes between releases.
Message text may also change.
.
.SH ENVIRONMENT VARIABLES
.