问题
I have a string in the form -content-, and I would like to replace it with &content&. How can I do this with replace in PowerShell?
回答1:
The built-in -replace operator allows you to use a regex for this e.g.:
C:\PS> '-content-' -replace '-([^-]+)-', '&$1&'
&content&
Note the use of single quotes is essential on the replacement string so PowerShell doesn't interpret the $1 capture group.
回答2:
PowerShell strings are just .NET strings, so you can:
PS> $x = '-foo-'
PS> $x.Replace('-', '&')
&foo&
...or:
PS> $x = '-foo-'
PS> $x.Replace('-foo-', '&bar&')
&bar&
Obviously, if you want to keep the result, assign it to another variable:
PS> $y = $x.Replace($search, $replace)
来源：https://stackoverflow.com/questions/14912948/replace-substring-in-powershell