How to elimate special character "^@" in text by perl?

Question

I try to eliminate below special character "^@" by perl in the attachment. I have tried "$.*^' regular expression for elimination in perl but fail.

Have anyone got the experience to eliminate such special character? appreciate your help.

Answer 1

I try to eliminate below special character "^@" by perl in the attachment.

That is probably a representation of a zero-byte, just like ^A is a one-byte, etc.

I have tried "$.*^' regular expression for elimination in perl but fail

What do you expect "$.*^' to do? It looks bizarre to me.

I would try "s/x{00}/./g", which is just one of the many representations of a substitution that replaces all zero-bytes with a dot.