Powershell confuses -computer with -computername

here script running:

$date = get-date -uformat "%b-%d-%y"
$location = "d:\ps_scripts\daily_volume_space\"
$path = $location += $date + ".csv"
gwmi -query "select systemname,caption,capacity,freespace win32_volume drivetype=3" -computer (gc d:\ps_scripts\servers.txt) | select-object systemname,caption, @{n="% free";e={"{0:p2}" -f ([long]$_.freespace/[long]$_.capacity)}}, @{name="freespace(gb)"; expression={"{0:n2}" -f ($_.freespace/1gb)}},@{name="size(gb)"; expression={"{0:n2}" -f ($_.capacity/1gb)}} | sort "% free" | export-csv $path -notypeinformation

error message

get-wmiobject : cannot validate argument on parameter 'computername'. argument null or empty. supply argument not nul
l or empty , try command again.
@ d:\ps_scripts\testscripts\volumespace_old.ps1:1 char:105
+ gwmi -query "select systemname,caption,capacity,freespace win32_volume drivetype=3" -computer <<<< (gc d:\ps_scripts\servers.txt) | select-object systemname,caption,@{name="size(gb)"; expression={"{0:n2}" -f ($_.capacity/1gb)}},@{name="freespace(g
b)"; expression={"{0:n2}" -f ($_.freespace/1gb)}}, @{n="% free";e={"{0:p2}" -f ([long]$_.freespace/[long]$_.capacity)}} | sort "% free"
| export-csv d:\dssstage\ps_scripts\disk-gb.csv -notypeinformation
+ categoryinfo : invaliddata: ( [get-wmiobject], parameterbindingvalidationexception
+ fullyqualifiederrorid : parameterargumentvalidationerror,microsoft.powersh ell.commands.getwmiobjectcommand

script has been running fine weeks. i'm not sure why powershell thinks -computer shorthand -computername. suggestions?

there wrong file that’s sure... perhaps blank

line?

 

also, follow mean param stuff?

 

if powershell can figure out param based on give it,

will use full name of param

 

so, cant type -c because there 3 params start c,

you can -co because 1 starts co (computername)

 

you -compute if wanted, or -computern full param

name computername, if put in enough powershell knows

which param is, fine..

 

your problem being passed -computername (the contents of

that file) screwing command.. because null or empty..

 

pull file in

 

$servers = gc d:\ps_scripts\servers.txt

 

$servers

$servers | gwmi -query "select systemname,caption,capacity,freespace

win32_volume drivetype=3" | select-object systemname,caption, @{n="%

free";e={"{0:p2}" -f ([long]$_.freespace/[long]$_.capacity)}},

@{name="freespace(gb)"; expression={"{0:n2}" -f

$_.freespace/1gb)}},@{name="size(gb)"; expression={"{0:n2}" -f

($_.capacity/1gb)}} | sort "% free" | export-csv $path -notypeinformation

 

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justin rich
http://jrich523.wordpress.com
please remember mark replies answers if , unmark them if provide no help.

Windows Server  >  Windows PowerShell