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Regex to replace numbers in a string

Posted on 2013-01-25
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2,532 Views
Last Modified: 2013-01-25
Hi,

I'd like to remove any number of digits within a string only if the appear at the end of the string. Say that I have strings such as:

Strings
---------------------------
123ABC666
ABC123456
55ABCDE23423423423423423423423FG
FFF12092184928903489238492384982394

Desired output
--------------------------
123ABC
ABC
55ABCDE23423423423423423423423FG
FFF

I can detect if there are numbers at the end of the string using "\d$", and I can replace with $string -replace "[0-9]". However, this wipes out any other numbers anywhere in the string....what I want to do is only wipe out numbers at the end of the string.
if($string -match "\d$") {
     $string -replace "[0-9]"  # Need to target ONLY numbers at the end of string
} else {
     $string
}

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Question by:bndit
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5 Comments
 
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Accepted Solution

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Subsun earned 205 total points
ID: 38821043
$string -replace "[0-9]+$"
$string -replace "\d+$"
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Author Comment

by:bndit
ID: 38821046
Thx!   what's the "+$" mean? append to the end? only look in the end?
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Expert Comment

by:Subsun
ID: 38821055
$ means @End
^ means @Start..
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Author Closing Comment

by:bndit
ID: 38821061
Thanks!
0
 
LVL 40

Expert Comment

by:Subsun
ID: 38821072
Here is a reference..

Regular Expression Cheat Sheet (.NET)
http://regexlib.com/CheatSheet.aspx
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