验证共享名称

Question

如果用户共享名称输入的是c $且没有其他内容，我如何验证powershell脚本？例如，从\\ hostname \ c $

中提取共享名称

$sharename = Read-Host "Enter path"
if ( $sharename -eq "c$")
  {
    "execute script"
  }
else 
  {
    "ShareName must be c$"
  }

Answer 1

使用-match运算符表示正则表达式，或-like表示通配符，如此，

if ( $sharename -match "\\\\\w+\\c\$") {
    "execute script"
  }

正则表达式是这样构建的，

\\ -> \
\\ -> \
\w+ -> at least one word character
\\ -> \
c  -> letter 'c'
\$ -> dollar sign

测试用例

$sharename = '\\nomatter\c$'
$sharename -match "\\\\\w+\\c\$"
True


$sharename = '\\nomatter\C$'
$sharename -match "\\\\\w+\\c\$"
True


$sharename = '\\nomatter\d$'
$sharename -match "\\\\\w+\\c\$"
False

$sharename = '\\nomatter\cee$'
$sharename -match "\\\\\w+\\c\$"
False