Update cheatsheets

egrep

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# egrep
+
+> Find patterns in files using extended regular expression (supports `?`, `+`, `{}`, `()` and `|`).
+> More information: <https://manned.org/egrep>.
+
+- Search for a pattern within a file:
+
+`egrep "{{search_pattern}}" {{path/to/file}}`
+
+- Search for a pattern within multiple files:
+
+`egrep "{{search_pattern}}" {{path/to/file1 path/to/file2 ...}}`
+
+- Search `stdin` for a pattern:
+
+`cat {{path/to/file}} | egrep {{search_pattern}}`
+
+- Print file name and line number for each match:
+
+`egrep --with-filename --line-number "{{search_pattern}}" {{path/to/file}}`
+
+- Search for a pattern in all files recursively in a directory, ignoring binary files:
+
+`egrep --recursive --binary-files={{without-match}} "{{search_pattern}}" {{path/to/directory}}`
+
+- Search for lines that do not match a pattern:
+
+`egrep --invert-match "{{search_pattern}}" {{path/to/file}}`