Tracepoint format files need chmod a+r to allow non-root
它最著名的用途是处理“权限被拒绝”的尴尬局面。你自信地键入 systemctl restart nginx，按下回车，系统却嘲笑你权限不足。这时无需重新输入，只需运行：
。关于这个话题，搜狗输入法跨平台同步终极指南：四端无缝衔接提供了深入分析
In the case of this example tree, I’ll define a breadth-first traversal as one which would order these notes as 12436, and a depth-first traversal as one which would order them 12346. I’ll be using the depth-first order for the remainder of this post.
C39) ast_C40; continue;;