Monday, January 9, 2012

"More" Can Be Dangerous - Use Better Alternative in PowerShell

 

PowerTip of the Day, from PowerShell.com:

 

You might know the more.com tool: when you pipe output to more.com, the output is displayed page by page:

PS> Get-EventLog -LogName System | more

However, "more" can be dangerous as you see here. You will not get any results for a long time, and your CPU load increases. more.com first collects all results before it starts paginating it. This takes a long time and a lot of resources.

That's why you should avoid more.com and instead use Out-Host with the parameter -Paging.

PS> Get-EventLog -LogName System | Out-Host -Paging

You immediately see the benefit: results appear momentarily, and no additional CPU load is created.

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