regex - matching a line with a literal asterisk "*" in grep -

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की कोशिश की 

  $ गूंजती "$ STRING" | Egrep "(\ *)"

और भी 

  $ गूंजती "$ STRING" | Egrep '(\ *)'

और अनगिनत अन्य भिन्नताएं मैं बस उस रेखा से मिलान करना चाहता हूं जिसमें लाइन में कहीं भी एक शाब्दिक तारांकन होता है।

एक वर्ण वर्ग की कोशिश करें इसके बजाय

<पूर्व> "$ STRING" | उदा। '[*]'

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