関連ワード:  bash script check environment variable is set    bash script check environment variable exists    linux bash script check if environment variable is set    linux bash check if environment variable is set    bash script if environment variable not set    linux check environment variable is set    shell script check if environment variable is set    bash script check if env variable exists    bash script fail if environment variable not set    shell script check if env variable is set  
結果 : bash script check environment variable is set