powershell - 表达几个常用的条件语句

有几种常用的条件语句，例如:

是否包含，是否以字母开头，是否以字母结尾，是否为空。

有人可以用统一的方式编写代码吗？

$var = "word somestring"
if ($var --Does not contain-- "somestring") {
    Write-Host "true"
}

$var="word somestring"
if ($var --Does not start with-- "somestring") {
    Write-Host "true"
}

$var = "word somestring"
if ($var --Does not Ends with-- "somestring") {
    Write-Host "true"
}

$var = "word somestring"
if ($var --Is Not Empty--) {
    Write-Host "true"
}

最佳答案

$var = "word somestring"

# $var --Does not contain-- "somestring"
if ($var -notmatch "somestring") {
    Write-Host "true"
}

# $var --Does not start with-- "somestring"
if ($var -notmatch "^somestring") {
    Write-Host "true"
}

# $var --Does not start with-- "somestring"  - case sensitive
if (-not $var.StartsWith("somestring")) {
    Write-Host "true"
}

# $var --Does not Ends with-- "somestring"
if ($var -notmatch "somestring`$") {
    Write-Host "true"
}

# $var --Does not Ends with-- "somestring"  - case sensitive
if (-not $var.EndsWith("somestring")) {
    Write-Host "true"
}

# $var --Is Not Empty--
if (-not [String]::IsNullOrEmpty($var)) {
    Write-Host "true"
}

请注意:默认情况下，字符串(例如.Net)方法区分大小写，而PowerShell不区分大小写。

关于powershell - 表达几个常用的条件语句，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/56606492/