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Reading files and pulling out the one line that matters.
Text Reading and searching text Read files and search inside them line by line using cat, head, tail, less and grep.
Text Pipes and redirection Chain commands together with pipes, and send their output into files with redirection.
Text Text processing with sed and awk Two small tools that reshape text on the way through a pipe.
Text Encoding and hashes Encode, decode and verify files with base64, xxd, strings and sha256sum on your phone.