How can I join the result of `ls` as a char separated string in PowerShell?

问题

I have a folder containing the following files:

• File_1.txt
• File_2.txt
• AnotherFile.txt

I want to be able to achieve an output of: File_1.txt - File_2.txt

I have tried running:

ls .\file*.txt | %{$_.Name}

which returns what I want except on separate lines, how can I join the files returned by a given character (- in this example)?

Any help is appreciated.

回答1:

You can use the -join operator:

(ls file*) -join ' - '

If you need more control about the individual items being joined here, just amend the pipeline appropriately:

(ls file* | select -Expand Basename) -join ' - '

回答2:

i'd do:

ls .\file*.txt | Foreach { $output = $output + $_ + ' - '}

来源：https://stackoverflow.com/questions/33077547/how-can-i-join-the-result-of-ls-as-a-char-separated-string-in-powershell