Interdata_v6/usr/doc/man/man1/arcv.1

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including files from this version of Unix. 
.th ARCV I
.sh NAME
arcv - convert old archive files to new format
.sh SYNOPSIS
arcv file ...
.sh DESCRIPTION
Converts each file (assumed to be old archive format)
to the new format. Each file is rewritten.
.sh FILES
/tmp/arc#
.sh "SEE ALSO"
ar(I)
.sh DIAGNOSTICS
"Bad archive format" - file was not in old archive format.