powershell shiznitch


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#to download a file in ps/cli:
$WebClient = New-Object System.Net.WebClient
$WebClient.DownloadFile( "http://downloads.mixxx.org/mixxx-2.0.0/mixxx-2.0.0-win64.exe", "c:\users\grayninja\Downloads\mixxx-2.0.0-win64.exe")

#then, to run the file:
.\mixx-2.0.0-win64.exe

#to download a file, multi-line...or ps file:
$Url = "http://www.thomasmaurer.ch/ps.txt"	#source of code: http://www.thomasmaurer.ch/2010/10/how-to-download-files-with-powershell/
$Path = "C:\temp\ps.txt"
$Username = ""
$Password = ""
 
$WebClient = New-Object System.Net.WebClient
$WebClient.Credentials = New-Object System.Net.Networkcredential($Username, $Password)
$WebClient.DownloadFile( $url, $path )


##a good source for ps commands: 



#variables start with $:
$a = get-childitem


#get a count of txt files in a directory:
$a = get-childitem c:\tech\* -Include *.txt
$a.count
$b = get-childitem c:\tech\* -recurse -Include *.txt
$b.count


#get a list of sub-folder names and store in $folders
$folders = gci 'c:\tech' | where-object{($_.PSIsContainer)} | foreach-object{$_.Name}
#or 
$folders = gci 'c:\tech' -recurse | where-object{($_.PSIsContainer)} | foreach-object{$_.Name}
$folders	#to print


#some get-childitem tips
#dir, ls, gci are all aliases for get-childitem
#-recurse, -include "string" 
#-path isn't needed, but probably good practice to include


#del in powershell may permanently delete the file


#folder size
$colItems = (Get-ChildItem C:\tech\Drivers | Measure-Object -property length -sum) "{0:N2}" -f ($colItems.sum / 1MB) + " MB"


#recover drive space (multi-line):
$disk = Get-WmiObject Win32_logicalDisk -ComputerName <hostname> -Filter "DeviceID='C:'" 
Select-Object Size,Freespace

$size_format = ($disk.Size / 1073741824)
$free_format = ($disk.Freespace / 1073741824)

echo ""
echo "C: Drive" "Total Size: $size_format"
echo "Free Space: $free_format"
$disk_percentage = ($free_format / $size_format) * 100
echo "Percentage: $disk_percentage %"
echo ""

#or simply, for one line:
$disk = Get-WmiObject Win32_logicalDisk -ComputerName <hostname> -Filter "DeviceID='C:'" 
$disk = Get-WmiObject Win32_logicalDisk #for all drives available



#get a list of processes for any greater than 0.0 usage
get-process | sort-object cpu - Descending | where-object {_.cpu -gt 0.0}
can substitute where-object for ?

#to get a count
(get-process | sort-object cpu - Descending | where-object {_.cpu -gt 0.0}).length