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比较两个文件并输出匹配项

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比较两个文件并输出匹配项

我有类似这样的文件：

文件1：

1.1.1.7 mounting of udf filesystems is disabled Fail
1.1.1.8 mounting of FAT filesystems is disabled  Fail
1.1.5 noexec option set on /tmp partition   Fail
1.1.17 noexec option set on /dev/shm partition  Fail
1.1.21 sticky bit is set on all world-writable directories  Fail
1.3.1 AIDE is installed Fail

文件2：

1.1.1.7 Ensure mounting of udf filesystems is disabled
1.1.1.8 Ensure mounting of FAT filesystems is disabled
1.1.3 Ensure nodev option set on /tmp partition
1.1.4 Ensure nosuid option set on /tmp partition

我想比较第一列上的两个文件并输出它们匹配的位置。对于上面的内容，输出将是：

1.1.1.7 Ensure mounting of udf filesystems is disabled
1.1.1.7 mounting of udf filesystems is disabled Fail
1.1.1.8 Ensure mounting of FAT filesystems is disabled
1.1.1.8 mounting of FAT filesystems is disabled  Fail

我该怎么做？

另外我该如何反转它以便我可以显示那些不匹配的内容？比较 File1 和 File2，反之亦然？

答案1

awk '
  NR == FNR {a[$1] = $0; next} 
  ($1 in a) {print; print a[$1]}
' File1 File2
1.1.1.7 Ensure mounting of udf filesystems is disabled
1.1.1.7 mounting of udf filesystems is disabled Fail
1.1.1.8 Ensure mounting of FAT filesystems is disabled
1.1.1.8 mounting of FAT filesystems is disabled  Fail

如果您想对 File2 中的不匹配条目进行简单测试

awk 'NR==FNR {a[$1]=$0; next} !($1 in a)' File1 File2
1.1.3 Ensure nodev option set on /tmp partition
1.1.4 Ensure nosuid option set on /tmp partition

相反，File1 中的不匹配条目

awk 'NR==FNR {a[$1]=$0; next} !($1 in a)' File2 File1
1.1.5 noexec option set on /tmp partition   Fail
1.1.17 noexec option set on /dev/shm partition  Fail
1.1.21 sticky bit is set on all world-writable directories  Fail
1.3.1 AIDE is installed Fail

（这print是隐式的）。

答案2

perl -lane '
        @ARGV and $h{$F[0]}=$_,next;
        print "$_\n$h{$F[0]}" if exists $h{$F[0]};
' File2 File1

1.1.1.7 mounting of udf filesystems is disabled Fail
1.1.1.7 Ensure mounting of udf filesystems is disabled
1.1.1.8 mounting of FAT filesystems is disabled  Fail
1.1.1.8 Ensure mounting of FAT filesystems is disabled

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