Variable value null in powershell string

Question

I am using below code in PowerShell. Unfortunately it is not picking up $Startinghash and $lastHash value. If I pass value directly, code is working fine.

Not Working :-

$StartingHash = "f116bcce5cc0701cb0b5a673bc4ce9f723050f04"
$LastHash = "2870d215c7201e7cf65c71d4d0e732078b3bda31"

git log --pretty=format: --name-only $StartingHash..$LastHash | sort | uniq | grep -i '".sql"' > C:\Ashish\data\sqlRB.txt

Working :-

git log --pretty=format: --name-only f116bcce5cc0701cb0b5a673bc4ce9f723050f04..2870d215c7201e7cf65c71d4d0e732078b3bda31 | sort | uniq | grep -i '".sql"' > C:\Ashish\data\sqlRB.txt

I think somehow variable value is not set.

Write-Host git log --pretty=format: --name-only $StartingHash..$LastHash | sort | uniq | grep -i '".sql"' > C:\Ashish\data\sqlRB.txt

Output :-

git log --pretty=format:--name-only f116bcce5cc0701cb0b5a673bc4ce9f723050f04..2870d215c7201e7cf65c71d4d0e732078b3bda31

@matt when i say its not working that means files C:\Ashish\data\sqlRB.txt is empty. — Ashish Mishra
– Ashish Mishra, Commented Oct 26, 2015 at 13:02
What is the output of just this then? git log --pretty=format: --name-only $StartingHash..$LastHash or git log --pretty=format: --name-only "$StartingHash..$LastHash" — Matt
– Matt, Commented Oct 26, 2015 at 13:04
@Matt git log --pretty=format: --name-only "$StartingHash..$LastHash" worked when I tested it. AFAICS your updated answer was correct. Voted to undelete. — Ansgar Wiechers
– Ansgar Wiechers, Commented Oct 26, 2015 at 13:25
@AnsgarWiechers Does that mean the quotes were required? Possibly the further filtering and redirection is the issue? — Matt
– Matt, Commented Oct 26, 2015 at 13:31
@Matt Yes. Without quotes: no output. With quotes: same output as with literal hashes. — Ansgar Wiechers
– Ansgar Wiechers, Commented Oct 26, 2015 at 14:39

Community · Accepted Answer · 2017-05-23 12:29:53Z

2

I cannot speak for your Git code but, as PetSerAl points out there is whitespace inserted in your --name-only string. You can see this when you type:

Write-Output  $StartingHash..$LastHash

or

Write-Host  $StartingHash..$LastHash

What you can do is enclose those values in quotes so that PowerShell sees it as a single string without any whitespace or unanticipated formatting.

git log --pretty=format: --name-only "$StartingHash..$LastHash" | ....

edited May 23, 2017 at 12:29

CommunityBot

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answered Oct 26, 2015 at 12:39

Matt

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3 Comments

user4003407 Over a year ago

If definitely not interpreted as range operator. Try this: write $StartingHash..$LastHash. It does not produce any error.

Matt Over a year ago

@PetSerAl Crap. That is what you meant from your comment. Was my answer right but my assumption wrong

Ashish Mishra Over a year ago

@PetSerAL it gives output f116bcce5cc0701cb0b5a673bc4ce9f723050f04 ..2870d215c7201e7cf65c71d4d0e732078b3bda31 which is correct

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