関連ワード:  bash variable is defined and not empty    bash variable is set and not empty    bash if variable is defined and not empty    bash if variable is set and not empty    bash variable exists and not empty    bash check if environment variable is set and not empty    bash if variable exists and not empty    bash check variable exists and not empty    shell check if variable is set and not empty    shell check if variable is not empty  
結果 : bash variable is defined and not empty