Powershell example 1

Restart-Computers.ps1

# Define input parametersparam (  [string] $filename = $(throw "Filename is required!"))Write-Host "Reading computer names from $filename"# Read file$computers = get-content $filenameforeach ($computer in $computers) {  # Connect to WMI  $wmi = get-wmiobject -class "Win32_OperatingSystem" `   -namespace "root/cimv2" -computer $computer  # Restart computer  foreach ($item in $wmi) {    $wmi.reboot()    write-host "Restarted " + $computer  }}

ScopeTest.ps1 
write-host "1 (var): $var"$var = "SCRIPT"$global:var = "GLOBAL"write-host "2a (var): $var"write-host "2b (global): $global:var"function foo {  write-host "3a (var): $var"  write-host "3b (global): $global:var"  $var = "LOCAL"  $script:var = "SCRIPT!"  write-host "4a (var): $var"  write-host "4b (global): $global:var"  write-host "4c (script): $script:var"}foowrite-host "5a (var): $var"write-host "5b (global): $global:var"write-host "5c (script): $script:var"
 
NegativeMatchingTest.ps1
$var="The-quick-brown-fox-jumped-over-the-lazy-dog."$var2="The quick brown fox jumped over the lazy dog."$regex=[regex]"/s{1}"$varif (($regex.IsMatch($var)) -eq "False"){write-host "Expression has spaces"}else{write-host "Expression has no spaces" }$var2if (($regex.IsMatch($var2)) -eq "False"){write-host "Expression has spaces"}else{write-host "Expression has no spaces" }
 
ForEachFruit.ps1 
#ForEachFruit.ps1$var=("apple","banana","pineapple","orange")foreach ($fruit in $var) {$i++ #this is a counter that is incremented by one each time throughwrite-host "Adding" $fruit}write-host "Added" $i "pieces of fruit"
 
ForEachFile.ps1 
#ForEachFile.ps1set-location "C:/"$sum=0foreach ($file in get-childitem) {#$file.GetType()  if (($file.GetType()).Name -eq "FileInfo") {   write-host $file.fullname `t $file.length "bytes"   $sum=$sum+$file.length   $i++   }}write-host "Counted" $i "file for a total of" $sum "bytes."
ForEachSvc.ps1 
#ForEachSvc.ps1get-service | foreach {  if ($_.status -eq "Running") {  write-host  $_.displayname "("$_.status")" -foregroundcolor "Green"  write-host `t "Service Type="$_.servicetype -foregroundcolor "Green"  }  else  {  write-host  $_.displayname "("$_.status")" -foregroundcolor "Red"  }}
IfTest.ps1 
#IfTest.ps1$i=11if ($i-le 10) {"Less than 10"}else{"Greater than 10"}
 
IfElseIfTest.ps1
#IfElseIfTest.ps1$i=45if ($i -le 10) {write-host "Less than 25"}elseif ($i -le 50){write-host "Less than 50"}else{write-host "Greater than 50"}
 
IfElseIfTest.ps1
#IfElseIfTest.ps1$i=45if ($i -le 10) {write-host "Less than 25"}elseif ($i -le 50){write-host "Less than 50"}else{write-host "Greater than 50"}