Extract the values of a column and put them into an array-CodePudding

I want to find out how many java PIDs are running in order to stop them, put the values into an array, run it inside a loop and kill each process

Therefore I use the command

$a=ps | Where-Object -Property ProcessName -EQ -Value 'Java'`

Which shows me the following result:

Handles  NPM(K)    PM(K)      WS(K) VM(M)   CPU(s)     **Id** ProcessName
-------  ------    -----      ----- -----   ------     -- -----------
    661      51   748504     421716  -282            **2008** java
    331      22   358464     135808  -525           **14060** java

But I am stuck regarding how to extract the Id column values, in order to loop them later

Any help would be appreciated.

Many thanks

CodePudding user response：

As Santiago Squarzon commented, you can directly pipe the output of Get-Process (alias ps) to Stop-Process:

ps Java | Stop-Process

In case you want to list the killed processes, you can use -PassThru:

ps Java | Stop-Process -PassThru

So in most cases you don't even need to write a loop.

If you still have a use case where you need to explicitly loop over the process IDs, you can do it as suggested by mclayton, using member-access enumeration:

$proc = ps Java
foreach( $pid in $proc.Id ) {
    # do something with $pid
    "PID: $pid"
}

# ...or even shorter:
(ps Java).Id.ForEach{
    "PID: $_"
}