How can i make this work:
I'm trying to use it it a script so that it lists the processes i send with the script as arguments:
for ($i=0; $i -lt $args.length; $i++)
echo (Get-Process | Where-Object {$_.name -eq $($args[$i])})
}
It will however not list anything when i run it:
./list_process notepad svchost
It works fine when i do it manually:
Get-Process | Where-Object {$_.name -eq "notepad")}
In this case, you could simplify it ALOT. Get-Process supports an array of processnames, so you could simply pass it the whole $args-array.
PS > Get-Help Get-Process -Parameter name
-Name <String[]>
Specifies one or more processes by process name.
You can type multiple process names (separated by commas) and use wildcard characters.
The parameter name ("Name") is optional.
Also, the echo is unnecessary, as Write-Output(which echo is an alias for) is the default output for PowerShell.
list_process.ps1
Get-Process $args
Test:
PS > ./list_process notepad svchost
Handles NPM(K) PM(K) WS(K) VM(M) CPU(s) Id ProcessName
------- ------ ----- ----- ----- ------ -- -----------
77 7 1228 5856 88 0,09 6728 notepad
862 31 32164 33268 101 316 svchost
904 31 40508 42412 121 504 svchost
4463 62 92328 97088 417 512 svchost
519 16 9324 12768 49 808 svchost
827 46 35964 42348 156 832 svchost
601 19 11740 14540 57 840 svchost
The problem is that every scriptblock gets new $args, so use a temp variable:
for ($i=0; $i -lt $args.length; $i++){
$outerArg = $args[$i]
Get-Process | Where-Object {$_.name -eq $outerArg}
}
Perfect @Frode.
You can also build an advanced function to do a lot more:
Function Get-SelectiveProcesses{
[CmdletBinding()]
Param
(
[Parameter(Mandatory = $true)]
[string[]] $process
)
Get-Process $process
#Do other Things
}
And then call the function in your script like
PS C:\> Get-SelectiveProcesses notepad,svchost
Handles NPM(K) PM(K) WS(K) VM(M) CPU(s) Id ProcessName
------- ------ ----- ----- ----- ------ -- -----------
85 6 3672 7580 75 1.23 5260 notepad
711 51 19148 7588 123 568 svchost
404 10 3492 2760 56 844 svchost
373 11 3540 2896 41 1220 svchost
514 52 23436 7016 100 1324 svchost
631 31 85248 74368 200 1384 svchost
1458 109 31540 19140 180 1428 svchost
322 31 8388 3976 64 1628 svchost
372 30 32908 12736 171 1688 svchost
336 54 13672 4768 77 2096 svchost
126 47 6916 2344 61 2272 svchost
131 8 3228 532 55 3972 svchost
160 23 7456 1880 63 4032 svchost
Type help about_functions_advanced to know more.
