In Powershell, how do I concatenate one property of an array of objects into a string?

Question

For example, I have 3 files in c:\z

PS C:\z> dir | select name

Name
----
a.png
b.png
c.png

What I want is a string.

a.png,b.png,c.png

Thanks.

Really Helpful Article - Tell Me More: Expanding Objects and Properties in PowerShell — KyleMit
– KyleMit ♦, Commented Jul 24, 2017 at 14:49

manojlds · Accepted Answer · 2012-07-12 19:22:55Z

31

If you want an array of strings, all you have to do is to:

dir | select -expand name

If you want that as a single string with the values comma separated:

(dir | select -expand name) -join ","

answered Jul 12, 2012 at 19:22

manojlds

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1 Comment

KyleMit Over a year ago

Even Shorter - you can also simply treat the variable as a single object and just specify a property name. i.e. PowerShell will automatically expand dir.name into the same thing as dir | Select -ExpandProperty name.

Shay Levy · Accepted Answer · 2012-07-13 08:59:52Z

10

Just a small improvement, you can get names only with the Name switch:

(dir -name) -join ','

answered Jul 13, 2012 at 8:59

Shay Levy

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