5 Regular Expressions: selecting text *************************************
· Regular Expressions Overview Overview of Regular expression in 'sed' · BRE vs ERE Basic (BRE) and extended (ERE) regular expression syntax · BRE syntax Overview of basic regular expression syntax · ERE syntax Overview of extended regular expression syntax · Character Classes and Bracket Expressions · regexp extensions Additional regular expression commands · Back-references and Subexpressions Back-references and Subexpressions · Escapes Specifying special characters · Locale Considerations