Bash → 变量 → POSIX → This pageLINENO$LINENO contains the line number, which is currently being executed.LinksBash manualExamples1 2 # prints line 2, this comment is line 1 echo "line $LINENO" BashSupport Pro 是一个 支持 $LINENO 的 Bash 集成开发工具 – 马上试用！