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01-19-2015

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Quote:

Originally Posted by MadeInGermany

There are many old sed out there...
An escaped * is good style. And safe.

I have to agree with Scrutinizer here; there is no need to escape an asterisk when it is the 1st character in a BRE (as used in ed, ex, grep (without the -Eoption), sed, vi, etc.).

However, when an asterisk is used in an ERE (as used in awk (as in RavinderSingh13's suggested script), grep -E (AKA egrep on many systems), etc.), the asterisk does need to be escaped.

Some versions of sed also have an option to use EREs instead of BREs. In those versions of sed when that option is specified, the asterisk does need to be escaped.

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