Linux awk合并两个文件

我有下面的脚本来合并两个文件

awk -F"\t" '
    {key = $1}
    !(key in result) {result[key] = $0; next;}
    { for (i=2; i <= NF; i++) result[key] = result[key] FS $i }
    END {
        PROCINFO["sorted_in"] = "@ind_str_asc"    # if using GNU awk
        for (key in result) print result[key]
    }
' $1 $2 > $3 

文件2

电流联合收割机

Key    Column1  Column2  Column3  Column4   Column5
Test1    500     400     200       Good     Good     
Test2    499     400     200       Good     Good      
Test5    600     200     150       Good     Good          
Test6    600     199     150       Good     Good          
Test7    599     199     100       Good     Good  
Test3    Good    Good  
Test4    Good    Good  

预期联合收割机

Key    Column1  Column2  Column3  Column4   Column5
Test1    500     400     200       Good     Good     
Test2    499     400     200       Good     Good      
Test5    600     200     150       Good     Good          
Test6    600     199     150       Good     Good          
Test7    599     199     100       Good     Good 

---

谢谢大家!

在存储到数组中时添加条件

{key = $1}
!(key in result) && NR == FNR {result[key] = $0; next;}
(key in result) { for (i=2; i <= NF; i++) {
    result[key] = result[key] FS $i
    }
}
END {
    PROCINFO["sorted_in"] = "@ind_str_asc"    # if using GNU awk
    for (key in result) print result[key]
}

{key=$1}
!（输入结果）和&NR==FNR{result[key]=$0；next；}
（输入结果）{for（i=2；i您可以尝试以下命令：

awk '
    BEGIN { FS = OFS = "\t" }
    {key = $1}
    FNR == NR {result[key] = $0; next;}
    (key in result) { for (i=2; i <= NF; i++) result[key] = result[key] FS $i }
    END {
        PROCINFO["sorted_in"] = "@ind_str_asc"    # if using GNU awk
        for (key in result) print result[key]
    }
' file1 file2

您的想法是错误的。您描述的是一个
join
操作，有一个非常好的UNIX工具用于此操作，它有一个非常明显的名称：

$ join file1 file2 | column -t
Key    Column1  Column2  Column3  Column4  Column5
Test1  500      400      200      Good     Good
Test2  499      400      200      Good     Good
Test5  600      200      150      Good     Good
Test6  600      199      150      Good     Good
Test7  599      199      100      Good     Good

或者如果您坚持awk：

$ awk 'NR==FNR{m[$1]=$2" "$3; next} {print $0, m[$1]}' file2 file1 | column -t
Key    Column1  Column2  Column3  Column4  Column5
Test1  500      400      200      Good     Good
Test2  499      400      200      Good     Good
Test5  600      200      150      Good     Good
Test6  600      199      150      Good     Good
Test7  599      199      100      Good     Good

句子
第一列是键，$1和$2都是键。但是如果$2列有键，但$1列没有键，那么除了$1行之外，它也在组合。
没有任何意义。您应该更改它们以反映您的意思，或者删除它们。
Key     Column1 Column2 Column3         Column4 Column5
Test1   500     400     200             Good    Good
Test2   499     400     200             Good    Good
Test5   600     200     150             Good    Good
Test6   600     199     150             Good    Good
Test7   599     199     100             Good    Good

$ join file1 file2 | column -t
Key    Column1  Column2  Column3  Column4  Column5
Test1  500      400      200      Good     Good
Test2  499      400      200      Good     Good
Test5  600      200      150      Good     Good
Test6  600      199      150      Good     Good
Test7  599      199      100      Good     Good

$ awk 'NR==FNR{m[$1]=$2" "$3; next} {print $0, m[$1]}' file2 file1 | column -t
Key    Column1  Column2  Column3  Column4  Column5
Test1  500      400      200      Good     Good
Test2  499      400      200      Good     Good
Test5  600      200      150      Good     Good
Test6  600      199      150      Good     Good
Test7  599      199      100      Good     Good