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
}
($1 SUBSEP $2 SUBSEP $3) in f2 {
print > "file3"
f1[$1,$2,$3] = $0
next
}
{ print > "file4" }
' file2 file1
Use nawk or /usr/xpg4/bin/awk on Solaris.
