Mastering sed: Variable Substitution, Quoting, and Advanced Tricks

This article explains how to correctly use shell variables and variable substitution in sed, clarifies quoting rules, demonstrates retrieving the last N lines, handling backreferences, the -i option, greedy matching, the interplay of a and N commands, exclamation negation, and troubleshooting high CPU usage.

Shellquotingregex

0 likes · 15 min read

Mastering sed: Variable Substitution, Quoting, and Advanced Tricks

IT Services Circle

May 14, 2023 · Backend Development

Understanding Maven Resource Filtering and Variable Substitution in Spring Boot Projects

This article explains how Spring Boot's parent POM configures Maven resource filtering, uses the @ delimiter for variable substitution in YAML and properties files, and demonstrates multi‑profile activation to manage environment‑specific settings during build and packaging.

ProfilesResource FilteringSpring Boot

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Understanding Maven Resource Filtering and Variable Substitution in Spring Boot Projects