This lsof distribution contains a port of lsof revision 3.88 to NCR System Vr4 (3.0), done by Boyd Roberts . Please contact Boyd for information on and assistance with this port. The distribution works on NCR 2.2.1 and 3.0.0. To verify your NCR version: cat /etc/.relid The port was initially done on 3.0.0 and was then ported to 2.2.1. The only real difference between the two is that 2.2.1 uses the Wollongong Group IP stack whereas 3.0.0 uses Lachman Technology's. It was simply the luck of the draw that it was done in this order. The lsof_3.88.NCR.tar.gz file is a complete gzip'd tar archive distribution, specific to the NCR ports -- i.e., it contains all the source files for making lsof for the NCR target dialects, but no source files for any other dialects. Boyd Roberts February 19, 1997