00309    a2200121   4500020001500000082001200015100002100027245003300048260003700081300002500118500001900143650002500162  a8170296633  a005.432  aNorton, Peter005  a GUIDE To UNIXcPeter Norton  aNew York :bBantam Books,c1991.  axxiv, 560 p.c24 cm.  aIncludes Index  aUnix (Computer file)