自動起動確認 systemctl list-unit-files -t service postfixの場合 systemctl list-unit-files -t service | grep postfix httpdの場合 systemctl list-unit-files -t service | grep...

-e If an error (non-zero exit code) occurs in a series of shell script operations, exit there and return an error. RESULT=｀bash -e example.sh｀ if then ～処理～ fi ...