Learn multiple methods to pretty-print JSON in shell scripts using jq, Python, PHP, and built-in tools. Complete guide with examples for Unix/Linux developers.
Decode time command output: real, user, and sys explained. Learn which timing metric matters most for accurate application performance benchmarking.
Learn the correct sed command syntax to replace newline characters with spaces in Unix/Linux. Discover why direct substitution fails and how multiline processing solves this common text manipulation challenge.