Sumitabha Das gives you the vocabulary of the terminal. Once you finish his book, you can read man pages for any Unix-like system (macOS, FreeBSD, WSL on Windows) fluently.
"Suppose you want to list all users currently logged in who are named 'john'. You might try who | grep john . But what if you want lines that do NOT contain john? Use grep -v . What if you want the line number? Use grep -n ." sumitabha das unix pdf google books
The search for reflects a genuine need for a trusted, deep resource on UNIX. While free PDFs are available on the web, they are often illegal, incomplete, or of poor scan quality. Your best strategy is to use Google Books to preview the content and then purchase an official e-book or borrow a physical copy. Doing so ensures you get the complete, correctly formatted 5th or 6th edition, while respecting the author’s and publisher’s rights. Sumitabha Das gives you the vocabulary of the terminal