bg / fg inside a command line loop

冷暖自知 提交于 2019-11-29 07:12:49

You cannot suspend execution of the current shell. When you run your loop from the command line, it is executing in your current login shell/terminal. When you press [ctrl+z] you are telling the shell to suspend the current active process. Your loop is simply a counter in the current shell, the process being executed is sleep. Suspend only operates on sleep.

When you backgroud a process or execute it in a subshell (roughly equivalent), you can suspend that separate process in total.

易学教程内所有资源均来自网络或用户发布的内容,如有违反法律规定的内容欢迎反馈
该文章没有解决你所遇到的问题?点击提问,说说你的问题,让更多的人一起探讨吧!