The command grep is a really simple tool to us to search for text in a file. But the real power comes when we ... ... <看更多>

Learn the basic syntax of Extended Regular Expressions, using grep -E ... which enables Extended Regular Expression (ERE) mode for searching regex patterns. ... <看更多>

grep matches, grep -v does the inverse. If you need to "match A but not B" you usually use pipes: grep "${PATT}" file | grep -v ... ... <看更多>

Interpret PATTERN as an extended regular expression (see below). -e PATTERN, --regexp=PATTERN. Use PATTERN as the pattern; useful to protect patterns beginning ... ... <看更多>

Unlike GNU grep, ripgrep stays fast while supporting Unicode (which is always on). ripgrep has optional support for switching its regex engine to use PCRE2. ... <看更多>