12892SdfrBEGIN { 24949Sbde FS = "-" 32892Sdfr} 42892Sdfr/sh$/ { 52892Sdfr n++ 62892Sdfr l = length($NF) 72892Sdfr s += l 82892Sdfr ck %= l 92892Sdfr totck += ck 102892Sdfr print 112892Sdfr} 124949SbdeEND { 132892Sdfr if (n > 0) { 142892Sdfr printf "%d %d %d %fn\n", totck, n, s, s/n 152892Sdfr } 162892Sdfr else 17 print "n is zero" 18} 19