Hint that --update may need sudo
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@ -129,7 +129,7 @@ def parseOpts(overrideArguments=None):
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general.add_option('-v', '--version',
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action='version', help='print program version and exit')
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general.add_option('-U', '--update',
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action='store_true', dest='update_self', help='update this program to latest version')
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action='store_true', dest='update_self', help='update this program to latest version. Make sure that you have sufficient permissions (run with sudo if needed)')
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general.add_option('-i', '--ignore-errors',
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action='store_true', dest='ignoreerrors', help='continue on download errors', default=False)
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general.add_option('--dump-user-agent',
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