Linkoteca. egrep

-v Invert match, show lines that do not match
-e pattern Specify a pattern (use multiple times to exclude several)
–exclude=»GLOB» Skip files matching the glob pattern
–include=»GLOB» Search only files matching the glob pattern
–exclude-dir=DIR Skip directories matching the name
-r Recursive search (skips symlinks found while descending)
-R Recursive search (follows all symlinks)

‘egrep’ stands for «extended grep» and is a part of the grep family of commands used for text processing and pattern matching in Linux. It is preferred over basic grep when working with extended regular expressions, as it inherently supports meta-characters without requiring them to be escaped, thus simplifying complex searches. The ‘egrep’ command is also known for its speed and efficiency, making it a popular choice among system administrators and developers.