Linux Pipes Redirection Grep — Free Linux Tutorial
Learn Linux Pipes Redirection Grep in Linux with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.
TL;DR: Learn Linux Pipes Redirection Grep in Linux with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.
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Linux Pipes Redirection Grep in Linux
Redirection allows you to send output to files or read input from them. > writes output to a file (overwriting), >> appends to a file. < reads input from a file. Pipes (|) connect commands: the output of one becomes input to the next. This is Unix's superpower—small, focused tools chained together solve complex tasks.
grep searches text for patterns. grep "keyword" file.txt finds lines containing "keyword". grep -i ignores case, grep -n shows line numbers, grep -c counts matches. Combine grep with pipes: cat file.txt | grep "pattern" | wc -l counts matching lines. Example: ps aux | grep python finds all python processes. Redirection and pipes are essential for scripting and data processing.
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