microclaw/shell-scripting
skills/built-in/shell-scripting/SKILL.md
Write robust, safe bash/shell scripts and one-liners, and explain or fix existing ones. Use when users want a shell script, a command pipeline, automation glue, or ask why a bash snippet misbehaves (quoting, globbing, exit codes). Triggers on mentions of bash, shell script, .sh, command line, pipe, one-liner, cron job command, 脚本, 命令行, 管道, shell.
$ install --global
skillsauthnpx skillsauth add microclaw/microclaw shell-scriptingInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
50%
Skipped
CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
Skipped
OWASP Dep-Check
50%
Last scanned: Jun 3, 2026, 3:20 AM12.3s1 file scanned
SKILL.md
- name:
- shell-scripting
- description:
- Write robust, safe bash/shell scripts and one-liners, and explain or fix existing ones. Use when users want a shell script, a command pipeline, automation glue, or ask why a bash snippet misbehaves (quoting, globbing, exit codes). Triggers on mentions of bash, shell script, .sh, command line, pipe, one-liner, cron job command, 脚本, 命令行, 管道, shell.
- license:
- Proprietary. LICENSE.txt has complete terms
- compatibility:
- No external dependencies. Works on macOS, Linux, and Windows (WSL/Git Bash).
Shell Scripting
Write scripts that fail loudly and safely, not ones that silently do the wrong thing.
Start every script with a strict header
#!/usr/bin/env bash
set -euo pipefail # exit on error, error on unset var, fail a pipeline if any stage fails
IFS=$'\n\t'
Quoting & safety (the top source of bugs)
- Always quote expansions:
"$var","${arr[@]}","$(cmd)"— unquoted values word-split and glob. - Use
[[ ... ]]over[ ... ]for tests;(( ... ))for arithmetic. - Prefer
"$(cmd)"over backticks. Checkmkdir -p,rm -rfpaths twice. - Handle filenames with spaces/newlines:
find ... -print0 | xargs -0, orwhile IFS= read -r line.
Common patterns
# Args with defaults
name="${1:-world}"
# Loop over files safely
for f in ./*.log; do [[ -e "$f" ]] || continue; echo "$f"; done
# Trap cleanup on exit
tmp="$(mktemp)"; trap 'rm -f "$tmp"' EXIT
# Check a command exists
command -v jq >/dev/null 2>&1 || { echo "jq required" >&2; exit 1; }
Guidance
- Run
shellcheck script.shif available — it catches most real bugs. - Make scripts idempotent where possible; print what they're doing.
- Don't parse
lsoutput; glob or usefind. Don'tevaluntrusted input. - For anything beyond ~50 lines of logic, consider Python instead.
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