The original title is: "Practical shell tricks: ctrl-r, xargs, sort/uniq set operations, and bash safety patterns"

Short summary

A practical guide to intermediate-to-advanced shell tricks beyond basic commands. Covers reverse search with ctrl-r, using xargs to pass output as arguments, set operations with sort and uniq, and bash safety patterns using set -euo pipefail with error traps. The article includes self-promotion for the author's git-lrc AI code reviewer project at the top.

• •ctrl-r for reverse command history search, ctrl-a/e/w/u for line editing
• •xargs converts piped output into command arguments with -I{} for placement control
• •Bash safety: set -euo pipefail with ERR trap for robust script error handling

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