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#trap

2 posts

Shell & TerminalDeep Dive October 4, 2026 8 min read

Bash DEBUG Traps: Trace Commands Without Changing Their Meaning

Use Bash's DEBUG trap as a bounded diagnostic hook, understand function inheritance and extdebug behavior, and avoid altering the command being traced.

#bash#debugging#trap

Shell & TerminalDeep Dive July 12, 2026 6 min read

Shell Signal Handling: trap, Cleanup, and Process Groups

Reliable shell cleanup requires understanding signals, traps, process groups, and the important difference between a normal exit and an uncatchable termination.

#deep-dive#signals#trap