比较文件并打印匹配项和差异项

Question

我正在尝试比较2个文件并打印输出，如下所示：

F1：

a|b|c|d|e|f|g
q|w|e|r||f|

F2：

a|b|c|d|e|f|g
q|w|e|r|t|f|u

输出：

f1 - a|b|c|d|e|f|g - f2 - a|b|c|d|e|f|g  - All columns are matching
f1 - q|w|e|r||f| - f2 - q|w|e|r|t|f|u - Column 5 and 7 are not matching

Answer 1

以下内容完全按照要求执行...（在“-All”之前注意两个空格，在不匹配的情况下注意一个空格，而f1和f2是小写）。如果我们要使用文件名而不是f1和f2，则FILENAME变量可用

#! /usr/bin/awk -f
BEGIN {
    FS = "|"
    split("", f1)
}

NR == FNR { # this is true only for the first file processed
    f1[FNR] = $0
    next
}

$0 == f1[FNR] { # with the second file, if lines are equal...
    print "f1 - " f1[FNR] " - f2 - " $0 "  - All columns are matching"
    next
}

{ # if the lines are not equal, split and find the columns not equal
    sz = split(f1[FNR], f)
    if (NF > sz)
        sz = NF
    c = ""
    for (i=1; i<=sz; ++i)
            if (f[i] != $i) {
                    c = i++
                    break
            }
    for (; i<=sz; ++i)
            if (f[i] != $i)
                    c = c " and " i
    print "f1 - " f1[FNR] " - f2 - " $0 " - Column " c " are not matching"
}