Remove percentages from robocopy log - powershell

Question

I'm using an older version of robocopy that includes percentages in the log even if the /NJH and /NJS paramters are set. So I'd like to remove the percentages from the log:
72880735 H:\1.txt
100%
33038490 H:\10.txt
100%
64878348 H:\2.txt
100%
25875810 H:\3.txt
0%
100%
I've tried with
(Get-Content $logfile) | Where-Object {
$_ -match '[\s](\d{1,})(\s+)(\w\W\W.+)'
} | Set-Content $logfile
But that results in
72880735 H:\1.txt
33038490 H:\10.txt
64878348 H:\2.txt
25875810 H:\3.txt
0%
So I get the 100%'s stripped out, but not the 0%.

Answer 1

/njh and /njs have nothing to do with the percentage information. You need to suppress progress output by adding the option /np to your robocopy commandline.
From the documentation:
/np Specifies that the progress of the copying operation (the number of files or directories copied so far) will not be displayed.
Edit: After taking a look at your actual commandline it looks like /np is not compatible with /mt. Adding the latter parameter makes robocopy display progress output even if /np is present. If you don't require running multi-threaded I'd remove that parameter (add /ndl to prevent directories from appearing in the output).
I would also recommend using splatting instead of putting the parameter list into a single string:
$params = $src, $dest, ('/LOG:"{0}"' -f $logpath), '/L', '/NP', '/NC', '/BYTES',
'/NJH', '/NJS', '/NDL', '/E', '/MOVE', '/XC', '/XN', '/XO', '/XD',
$excludedFoldersList
& robocopy #params
If for some reason you must use multi-threading you should be able to remove progress information from the log after completion like this:
(Get-Content $logpath) | Where-Object {
$_ -notmatch '^\s*\d{1,3}%\s*$'
} | Set-Content $logpath