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sometimes I run grep (aka select-string) that has string that occurs too ofter, then powershell goes crazy, sometimes I manage to kill it with ctrl-c, but even then i have to endure irritating beeping sound for 30 + seconds... can this be disabled also without killing terminal where it is running.

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sc config beep start= disabled sc stop beep ? – STTR Mar 27 '13 at 16:34
@STTR: Make that sc.exe, since sc in PowerShell is an alias for Set-Content. Read for more details. Make this in to an answer. – Jay Bazuzi Mar 28 '13 at 5:12
The term 'sc.exe' is not recognized as the name of a cmdlet, function, script file, or operable program. – NoSenseEtAl Mar 28 '13 at 9:16

This powershell is the SC equivalent that was already answered.

Get-Service Beep | Stop-Service -PassThru | Set-Service -StartupType Disabled
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