Question

我想比较两个对象并仅获取不同的值。我有以下代码：

$a = ("this is blah blah DOG")
$b = ("Dit is blah BLAH dog")
Compare-Object -ReferenceObject $a -DifferenceObject $b

使用上面的代码，我得到以下输出：

InputObject           SideIndicator
-----------           -------------
Dit is blah BLAH dog  =>           
this is blah blah DOG <=

但是我只想在两个对象中使用不同的值，例如Dit和this

Answer 1

Compare-Object适用于整个对象及其属性。它不会执行惰性字符串匹配。如果您需要先将字符串分成数组

$a = "this is blah blah DOG".Split()
$b = "Dit is blah BLAH dog".Split()
Compare-Object -ReferenceObject $a -DifferenceObject $b

当心与大小写有关的潜在问题，并根据需要使用-CaseSensitive。

Answer 2

对于此特定示例：

$a = ("this is blah blah DOG").Split(" ")
$b = ("Dit is blah BLAH dog").Split(" ")
Compare-Object -ReferenceObject $a -DifferenceObject $b

Answer 3

您没有显示csv文件的外观，因此就可以了，但是逐步执行操作即可。

($a = Get-Content -Path 'D:\Documents\file1.txt')
($b = Get-Content -Path 'D:\Documents\file2.txt')
Compare-Object -ReferenceObject $a -DifferenceObject $b

<#
What's in the two files

file1
hello
world



file2
hello
world



InputObject SideIndicator
----------- -------------
file2       =>           
file1       <=           
#>




($a = Get-Content -Path 'D:\Documents\file1.csv')
($b = Get-Content -Path 'D:\Documents\file2.csv')
Compare-Object -ReferenceObject $a -DifferenceObject $b

<#
What's in the two files

Col1,Col2,Col3
file1,hello,world



Col1,Col2,Col3
file2,hello,world



InputObject       SideIndicator
-----------       -------------
file2,hello,world =>           
file1,hello,world <=           
#>



($a = (Get-Content -Path 'D:\Documents\file1.csv' | Select -Skip 1) -split ',')
($b = (Get-Content -Path 'D:\Documents\file2.csv' | Select -Skip 1) -split ',')
Compare-Object -ReferenceObject $a -DifferenceObject $b

<#
file1
hello
world



file2
hello
world




InputObject SideIndicator
----------- -------------
file2       =>           
file1       <=  
#>

最后，听起来也像这样的问答环节

Compare two lists in Powershell

比较对象Powershell

3 个答案: