tag

#signals

3 posts

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

Shell & TerminalDeep Dive July 11, 2026 6 min read

Job Control: How Shells Manage Foreground and Background Processes

Ctrl-Z, bg, fg, and a trailing & all touch one mechanism: process groups and Unix signals deciding which process can read your terminal.

#deep-dive#job-control#processes

Shell & TerminalFix July 10, 2026 4 min read

Fixing 'Broken Pipe' Errors in Shell Scripts and Pipelines

A command mid-pipeline dies with 'Broken pipe,' often only when piped into head — a specific, well-defined signal, not a random failure.

#fix#pipes#signals