In this video, you’ll learn how to search for multiple words and display all matching content from a file in Linux using the grep command.
The grep command can be used not just for single-word searches, but also to find multiple patterns in one go — making it a powerful tool for filtering large files or logs efficiently.
🖥️ Commands Covered:
grep -E "word1|word2" filename – Search for multiple words in a file
grep -iE "error|fail|warning" filename – Case-insensitive multi-word search
grep -nE "success|completed" filename – Show line numbers of matches
grep -rE "login|logout" /var/log – Search recursively in all files
grep -vE "ignore|skip" filename – Exclude multiple patterns
💡 The grep command is an essential skill for system admins, cybersecurity professionals, and Linux users for searching keywords in logs, code, or data files.
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