在Linux中是否有任何命令可以基于多列进行模糊匹配

这是GNU awk的镜头（PROCINFO["sorted_in"]用来选择最合适的候选人）。它会对file2每个字段的字段值进行哈希处理，然后将值附加PID到该值上，就像field[2]["66M"]="S2"对每条记录中file1的PID匹配量计数一样，并打印出计数最大的一个：

BEGIN {
    FS=OFS=","
    PROCINFO["sorted_in"]="@val_num_desc"
}
NR==FNR {                                                      # file2
    for(i=1;i<=6;i++)                                          # fields 1-6
        if($i!="") {
        field[i][$i]=field[i][$i] (field[i][$i]==""?"":OFS) $1 # attach PID to value
    }
    next
}
{                                                               # file1
        for(i=1;i<=6;i++) {                                     # fields 1-6
            if($i in field[i]) {                                # if value matches
                split(field[i][$i],t,FS)                        # get PIDs
                for(j in t) {                                   # and
                    matches[t[j]]++                             # increase PID counts
                }
            } else {                                            # if no value match
                for(j in field[i])                              # for all field values
                    if($i~j || j~$i)                            # "go fuzzy" :D
                        matches[field[i][j]]+=0.5               # fuzzy is half a match
            }
        }
        for(i in matches) {                                     # the best match first
            print $0,i
            delete matches
            break                                               # we only want the best match
        }
}