Format the output of a hash table in Powershell to output to one line

Question

Is it possible to format the output of a hashtable in Powershell to output all the values onto one line?

e.g.

I have the hash table $hashErr with the below values:

 $hashErr = @{"server1" = "192.168.17.21";
              "server2" = "192.168.17.22";
              "server3" = "192.168.17.23"}

Which are written to a log with the below:

$hashErr.GetEnumerator() | Sort-Object Name | ForEach-Object {ForEach-Object {"{0}`t{1}" -f $_.Name,($_.Value -join ", ")} | Add-Content $log

The will cause the below to be written to the log:

    Name                           Value
    ----                           -----
server2                        192.168.17.22
server1                        192.168.17.21
server3                        192.168.17.23

My question is, how can I format this hash table so the output is written all to one line, like the below?

server2 192.168.17.22 | server1 192.168.17.21 | server3 192.168.17.23

This could be done by looping through all the values in the hash table and putting them into an array but surely there is a more direct way?

Answer 1

You can iterate over the keys of a hash table, and then in the loop lookup the values. By using the pipeline you don't need an intermediate collection:

($hashErr.Keys | foreach { "$_ $($hashErr[$_])" }) -join "|"