Regular Expressions 101

ERROR: the literal text ERROR: (case sensitive)

Negative Lookahead(?!Opening local file)

Opening local filethe literal text Opening local file (case sensitive)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

ERROR: (?!Opening local file)

ERROR: Writing local file
ERROR: Opening local file