awk - 比较两个文件中的列并替换第一个文件中的文本

awk - Compare columns from two files and replace text in first file

我有两个文件。第一个有 1 列,第二个有 3 列。我想比较两个文件的第一列。如有重合,将第2、3栏替换为具体数值;如果不是,打印同一行。

文件 1:

$ cat file1
26
28
30

文件 2:

$ cat file2
1,a,0
2,a,0
22,a,0
23,a,0
24,a,0
25,a,0
26,r,1510139756
27,a,0
28,r,1510244156
29,a,0
30,r,1510157364
31,a,0
32,a,0
33,r,1510276164
34,a,0
40,a,0

期望的输出:

$ cat file2
1,a,0
2,a,0
22,a,0
23,a,0
24,a,0
25,a,0
26,a,0
27,a,0
28,a,0
29,a,0
30,a,0
31,a,0
32,a,0
33,r,1510276164
34,a,0
40,a,0

我正在使用 gawk 来执行此操作(它在 shell 脚本中,我正在使用 solaris)但我无法正确输出。它只打印匹配的行:

$fuente="file2"
gawk -v fuente="$fuente" 'FNR==NR{a[FNR]=; next}{print ,="a",="0" }' $fuente file1 > file3

我得到的输出:

$ cat file3
26 a 0
28 a 0
30 a 0

为了清楚起见,真的展开了;像这样调用 (fuente.awk):

    awk -F \, -v fuente=file1 -f fuente.awk file2  # -F == IFS


    BEGIN {
        OFS=","          # set OFS to make printing easier

        while (getline x < fuente > 0)   # safe way; read file into array
        {
            a[++i]=x     # stuff indexed array
        }
    }
    {   # For each line in file2
        for (k=1 ; k<=i ; k++)   # Lop over array (elements in file1)
        {
            if ((==a[k]) && (! flag))
            {
                print(,"a",0)    # Found print new line
                flag=1             # print only once
            }
        }

        if (! flag)     # Not found
        {
            print([=10=])   # print original
        }

        flag=0          # reset flag
    }
    END { }

awk 一行:

awk 'NR==FNR{ a[]; next } in a{ ="a"; =0 }1' file1 FS=',' OFS=',' file2

输出:

1,a,0
2,a,0
22,a,0
23,a,0
24,a,0
25,a,0
26,a,0
27,a,0
28,a,0
29,a,0
30,a,0
31,a,0
32,a,0
33,r,1510276164
34,a,0
40,a,0