====== 針對 shell script 測試工具(shellcheck) ======
  * 因為最近用 AI 協助撰寫不少 shell script , 愈寫愈複雜, 想想應該要找個測試工具來幫忙
  * 以下是使用 shellcheck 的方式

===== 安裝方式 =====
  * Ubuntu / Debian <cli>
sudo apt install shellcheck
</cli>

===== 建議測試原則 =====
  * 只修正 critical 項目 <cli>
shellcheck -S error scripts/*.sh
</cli>
  * 範例:
    * 全部列出 <cli>
jonathan@200816-NB:~/github/docker-compose$ shellcheck scripts/*.sh

In scripts/alpine_upgrade.sh line 23:
    echo -e "${BLUE}[INFO]${NC} $(date '+%Y-%m-%d %H:%M:%S') - $1"
         ^-- SC3037 (warning): In POSIX sh, echo flags are undefined.


In scripts/alpine_upgrade.sh line 27:
    echo -e "${GREEN}[SUCCESS]${NC} $(date '+%Y-%m-%d %H:%M:%S') - $1"
         ^-- SC3037 (warning): In POSIX sh, echo flags are undefined.


In scripts/alpine_upgrade.sh line 31:
    echo -e "${YELLOW}[WARNING]${NC} $(date '+%Y-%m-%d %H:%M:%S') - $1"
         ^-- SC3037 (warning): In POSIX sh, echo flags are undefined.


In scripts/alpine_upgrade.sh line 35:
    echo -e "${RED}[ERROR]${NC} $(date '+%Y-%m-%d %H:%M:%S') - $1"
         ^-- SC3037 (warning): In POSIX sh, echo flags are undefined.


In scripts/alpine_upgrade.sh line 51:
trap cleanup_on_error ERR
                      ^-^ SC3047 (warning): In POSIX sh, trapping ERR is undefined.

:
</cli>
    * 只看 error <cli>
jonathan@200816-NB:~/github/docker-compose$ shellcheck -S error scripts/*.sh
jonathan@200816-NB:~/github/docker-compose$
</cli>

{{tag>bash}}