関連ワード:  bash test environment variable is set    bash if environment variable is set    bash test if environment variable is set    bash test if env variable is set    bash test env variable set    bash if environment variable is defined    bash check if environment variable is set and not empty    bash if environment variable is not set    bash check if environment variable is set to value    bash check if environment variable is set to true  
結果 : bash test environment variable is set