CODEWITHSUNDEEP
powershell
phill
phill

Reputation: 13864

Echo equivalent in PowerShell for script testing

I would like to output variables and values out in a PowerShell script by setting up flags and seeing the data matriculate throughout the script.

How would I do this?

For example, what would be the PowerShell equivalent to the following PHP code? 

echo "filesizecounter: " . $filesizecounter

Upvotes: 359

Views: 1089279

Answers (11)

Justin R.
Justin R.

Reputation: 24061

Powershell has an alias mapping echo to Write-Output, so you can use:

echo "filesizecounter : $filesizecounter"

Upvotes: 185

lauxjpn
lauxjpn

Reputation: 5254

It should also be mentioned, that Set-PSDebug is similar to the old-school echo on batch command:

Set-PSDebug -Trace 1

This command will result in showing every line of the executing script:

When the Trace parameter has a value of 1, each line of script is traced as it runs. When the parameter has a value of 2, variable assignments, function calls, and script calls are also traced. If the Step parameter is specified, you're prompted before each line of the script runs.

Upvotes: 10

Russ Van Bert
Russ Van Bert

Reputation: 762

PowerShell has aliases for several common commands like echo. Type the following in PowerShell: 

Get-Alias echo

to get a response: 

CommandType     Name                                               Version    Source
-----------     ----                                               -------    ------
Alias           echo -> Write-Output

Even Get-Alias has an alias gal -> Get-Alias. You could write gal echo to get the alias for echo. 

gal echo

Other aliases are listed here: https://learn.microsoft.com/en-us/powershell/scripting/learn/using-familiar-command-names?view=powershell-6

cat dir mount rm cd echo move rmdir chdir erase popd sleep clear h ps sort cls history pushd tee copy kill pwd type del lp r write diff ls ren

Upvotes: 7

Richard
Richard

Reputation: 109140

There are several ways:

Write-Host: Write directly to the console, not included in function/cmdlet output. Allows foreground and background colour to be set.

Write-Debug: Write directly to the console, if $DebugPreference set to Continue or Stop.

Write-Verbose: Write directly to the console, if $VerbosePreference set to Continue or Stop.

The latter is intended for extra optional information, Write-Debug for debugging (so would seem to fit in this case).

Additional: In PSH2 (at least) scripts using cmdlet binding will automatically get the -Verbose and -Debug switch parameters, locally enabling Write-Verbose and Write-Debug (i.e. overriding the preference variables) as compiled cmdlets and providers do.

Upvotes: 387

ali Darabi
ali Darabi

Reputation: 357

The Write-host work fine.

$Filesize = (Get-Item $filepath).length;
Write-Host "FileSize= $filesize";

Upvotes: 11

Peter
Peter

Reputation: 38535

I don't know if it's wise to do so, but you can just write

"filesizecounter: " + $filesizecounter

And it should output:

filesizecounter: value

Upvotes: 5

Paul Fijma
Paul Fijma

Reputation: 477

echo is alias to Write-Output although it looks the same as Write-Host.

It isn't What is the difference between echo and Write-Host in PowerShell?.

echo is an alias for Write-Output, which writes to the Success output stream. This allows output to be processed through pipelines or redirected into files. Write-Host writes directly to the console, so the output can't be redirected/processed any further.

Upvotes: 12

user36457
user36457

Reputation:

PowerShell interpolates, does it not?

In PHP

echo "filesizecounter: " . $filesizecounter

can also be written as:

echo "filesizecounter: $filesizecounter"

In PowerShell something like this should suit your needs:

Write-Host "filesizecounter: $filesizecounter"

Upvotes: 45

Luis
Luis

Reputation: 29

Try Get-Content .\yourScript.PS1 and you will see the content of your script.

also you can insert this line in your scrip code:

get-content .\scriptname.PS1
script code
script code

....

Upvotes: 2

Goyuix
Goyuix

Reputation: 24370

By far the easiest way to echo in powershell, is just create the string object and let the pipeline output it:

$filesizecounter = 8096
"filesizecounter : $filesizecounter"

Of course, you do give up some flexibility when not using the Write-* methods.

Upvotes: 15

aphoria
aphoria

Reputation: 20209

Write-Host "filesizecounter : " $filesizecounter

Upvotes: 32

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