Error handling and minimize script output to end-user - powershell

Question

I have a script which loops through a list of users (samaccountname):
# Read usersfile to variable
$users = get-content ("users.txt")
# Get current time
$now = $(get-date -uformat "%H:%M %d/%m/%Y")
# Loop through list of users
foreach($user in $users) {
# Disable user
Disable-QADUser $user
# Set informative description
Set-QADuser $user -Description "Disabled $now"
# Delete all groupmemberships except "domain users"
Get-QADGroup -Containsmember $user | where-object { $_.name -ne 'domain users'} | Remove-QADGroupmember
# Move to "disabled users" group
move-QADObject $user -NewParentContainer 'contosoc.com/Disabled users'
# Hide from addresslist
Set-Mailbox -identity $user -HiddenFromAddressListsEnabled $true
# Moving mailbox to disabled users database
Move-Mailbox -Identity $user -TargetDatabase "myserver\mydb" -BadItemLimit 50 -Confirm:$False
}
I would like to:
Suppress output from the different cmdlets and only show "$user is OK!" if all is ok and log success to a logfile.txt
Display "Error!" and the command that failed if not ok. And output the complete error msgs to a separate logfile.
I've been thinking about doing a if(!cmdlettorun) { write-host "Error!" } But I'm thinking that there must be a better way.
How should I do error handling in a proper fashion so I minimize the displayed output but still let me see it if desirable?

Answer 1

For suppressing cmlet output you can pipe to out-null or precede the command with:
[void](.. your cmdlets..)
a good way for your goal is using a tray-catch-finally code like in this minimized code:
$a = $ErrorActionPreference
$ErrorActionPreference = "SilentlyContinue"
foreach($user in $users) {
try
{
... yours code ...
$JobStatus = "OK"
}
catch [exception]
{
$("Error catched: " + $_.Exception.GetType().FullName) | out-file c:\file.log
$("Error catched: " + $_.Exception.Message) | out-file c:\file.log -append
$JobStatus = "not OK"
continue;
}
finally
{
write-host "$user is $JobStatus!"
}
$ErrorActionPreference = $a
}
For some hint to use try-catch-finally read here