関連ワード:  bash get return value of previous command    bash get return value of last command    bash get return code of previous command    bash get return code of last command    bash check return value of last command    bash check return code of previous command    shell get return code of previous command    bash check return code of last command    bash check exit code of previous command    bash get exit status of last command  
結果 : bash get return value of previous command