无法修剪 PowerShell 中的字符串

Question

I am tryinf to trim a string in powershell to get a desirer value but unable to do that.

ex string1= abc_xyz-mnq_R81 string2= abc_xyz-mnq_R82

I tried like- string1.trim("abc_xyz-mnq_R") Output: 81

string2.trim("abc_xyz-mnq_R") Output:8

I got output as 81 but when I tried for string2 I got only 8.

I need to have a generic way so whatever may be before anystring_R it only trim out that number.

Answer 1

try -replace to delete substrings by regex patterns

PS> $string1="abc_xyz-mnq_R81"
PS> $string2="abc_xyz-mnq_R82"
PS> $string1 -replace "^.*_R"
81
PS> $string2 -replace "^.*_R"
82