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writing-bash-scripts

Create and refactor Bash scripts following conventions (strict mode, fct_ naming, quoting). Includes shellcheck linting. Use when creating shell scripts, refactoring existing scripts, debugging shell errors, or linting scripts.

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archibate/dotfiles-opencode
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Files included (5)

  • SKILL.md1.6 KB
  • references/pref_bash.md9.9 KB
  • references/requirements.md5.3 KB
  • scripts/pref_bash_script_template.sh10.4 KB
  • scripts/run_shellck.sh1.2 KB

SKILL.md (original)

Review the instructions the agent will receive before you install.

Bash

Use this skill whenever the user asks to create/update/refactor a Bash script (.sh) or lint shell scripts.

Defaults

  • Shebang: #!/usr/bin/env bash
  • Strict mode: set -Eeuo pipefail
  • Functions: fct_<descriptive_snake_case>() { ... }
  • Variables: quote expansions like "${var}", prefer printf, use readonly for constants and local inside functions

Workflow

Creating/Refactoring Scripts

  1. Copy scripts/pref_bash_script_template.sh to the target path and rename it.
  2. Update the SCRIPT INFO / USAGE header blocks.
  3. Implement behavior in fct_execute_this, keep fct_main + trap structure.
  4. Follow the detailed conventions in references/pref_bash.md.
  5. Run shellcheck linting (see below).

Linting Scripts

Run shellcheck on scripts using the provided wrapper:

# Lint all scripts in scripts/ directory (default)
.opencode/skill/bash/scripts/run_shellck.sh

# Lint specific files or directories
.opencode/skill/bash/scripts/run_shellck.sh path/to/script.sh
.opencode/skill/bash/scripts/run_shellck.sh scripts/ other/dir/

The linting script:

  • Automatically detects shell scripts by extension (.sh, .bash, .zsh) or shebang
  • Exits non-zero on shellcheck failures
  • Defaults to scanning scripts/ when no arguments provided

See references/pref_bash.md section 14 for shellcheck integration details.

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