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Windows PowerShell Get-History Cmdlet

View The History of Your PowerShell Commands

This page explains that the Get-History, stores a cache of recent commands.  Many aspects are best suited to the command-line, while a few techniques are also useful in the ISE GUI.

Windows PowerShell Get-History Topics

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Introduction to Get-History

All becomes clear when you realize that 'Get' is the default verb, thus if you type plain: 'History', PowerShell interprets this as 'Get-History.

Get-History
# History

Note 1:  To confirm that History is an alias for Get-History, remove the # in front of History, and run the above commands again.

Note 2: The History cache retains a maximum of 32 commands.

Tasks for Get-History

One reason for listing the history is to save what you have done into a file.  Simply pipe (|) the results into a file, thus: History | Out-File "D: \pshell\WorkDone.txt".

Another reason for understanding what's available in the history cache is to employ the sister cmdlet Invoke-History -Id xyz as a quick method for replaying a long, complex, hard to remember command.

Research Properties for Get-History

To me, the killer reason for using Get-History is to check the execution status; the way I discovered this was with my trusty technique | GM  (Get-Member).

Get-History | Get-Member -MemberType Property

Note 3: Another reason for research properties is if you want to modify the results, for example you wish to pipe the output into Format-Table, but are unsure which properties to specify, for example CommandLine and ExecutionStatus.

Research Parameters for Get-History

This is the second of my trilogy of techniques for discovering more about any PowerShell cmdlet.

# PowerShell History Parameters
Clear-Host
Get-Help Get-History -full

Checking the help file will reveal useful parameters, for instance the -count.

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Research the Other Members of the History Family

# PowerShell History Family
Clear-Host
Get-Command -Noun History

This reveals the sister commands: Clear-History and Invoke-History.

Summary of PowerShell Get-History

If you need to check which commands you have been running then 'History' is the way to get a list of up to 32 items you recently typed in PowerShell.

 

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See more Microsoft PowerShell output tutorials:

PShell Home   • Out-File   • Out-GridView   • ConvertTo-Csv   • ConvertTo-Html   • ConvertFrom-Csv

Tee-Object   • Import-CSV   • Format-Table   • PowerShell Here-String  • ConvertFrom-JSON

Export-CliXml   • Format-List   • Read-Host    • PowerShell Get-History   • -f format   • Pipe to file

Please email me if you have a better example script. Also please report any factual mistakes, grammatical errors or broken links, I will be happy to correct the fault.

 

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