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When diving into the world of Linux Bash, shopt -s extdebug emerges as a potent but often underappreciated tool. Today, we'll explore how this option can modify function trace behaviors, enhance debugging capabilities, and simplify understanding complex scripts. Q1: What is shopt -s extdebug? A1: shopt is a shell builtin command used to toggle the values of settings controlling optional shell behavior. The -s option enables (sets) these settings. The extdebug option, when enabled, provides enhanced debugging features that help in the debugging of shell scripts, by extending the functionality of debugging and providing more detailed tracing capabilities.