Or even:
Code:
awk 'END { for (k in f2) {
split(f2[k], t)
print f2[k] > (((t[1] SUBSEP t[2] SUBSEP t[3]) in f1) ? "file5" : "file6")
}
}
NR == FNR { f2[$1,$2,$3] = $0; next }
{ print > (($1 SUBSEP $2 SUBSEP $3) in f2 ? "file3" : "file4")
f1[$1,$2,$3] = $0 }' file2 file1
