Web16 hours ago · 在Linux系统中,可以使用自启动脚本来让某个程序或服务在系统启动时自动启动。要编写一个Linux开机自启动脚本,可以按照以下步骤进行: 1.创建脚本文件:使用编辑器(如vi、nano等)在系统中创建一个脚本文件,例如可以将脚本文件命名为my_service。2. 编写脚本内容:在脚本文件中编写需要在开机 ... Web2) DisplayGID. 3) InputNewUser. 4) SetPassWord. [Qq]) echo "bye "exit 0. esac. done. 这个脚本还有如下问题:. 1、”只使用一个参数,其他情况在退出后打印一条提示信息”这个需求不明确,不知道是啥意思,正常情况下,像这种脚本都是不用位置参数的,也可能我不理解题目的 …
shell脚本中的if条件语句介绍和使用案例 - 腾讯云开发者社区-腾讯云
WebMar 14, 2024 · 主要介绍了linux shell(.sh)脚本编写和运行入门,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友们下面随着小编来一起学习学习吧 Webexit命令用于退出当前shell,在shell脚本中可以终止当前脚本执行。 常用参数. 格式:exit n. 退出。设置退出码为n。(Cause the shell to exit with a status of n.) 格式:exit. 退出。退出码不变,即为最后一个命令的退出码。(If n is omitted, the exit status is … cornelius or is in what county
Shell 脚本中的exit状态解释 - Linux资讯速推 - SegmentFault 思否
Web示例3:具有等待命令和返回状态的脚本. 和上面类似, “ bar.sh”脚本将调用foo.sh并在后台运行它,获取foo.sh的PID并等待其完成,一旦完成,它将启动bar.sh循环并完成,最后,它返回 foo.sh脚本的退出代码。 脚本: foo.sh (Exit status = 0) 脚本- foo.sh What can you do to write robust scripts that don’t break in unexpected ways in case of errors? The answer to this question is: don’t forget error handling. Instead of “hoping” that nothing will go wrong with your program, you can predict possible failures and decide how your program will react to those. How will … See more How do you exit a Bash script on error? The standard convention is the following: As you can see from the table above, failures can be represented with any non-zero exit codes. For instance: 1. 1 may be used if incorrect … See more I will show you an example of how the exit code is applied to the execution of any commands. This is really important in your Bash knowledge and I … See more Let’s see how you can use a Bash if else statement together with the $? variable. The following script tries to create a subdirectory tmp/project in the current directory. In the … See more Now let’s modify the echo command in the simple script we have used before. We want run it with an incorrect syntax and see if it exits with a non-zero exit code. Remove the double … See more WebMar 20, 2015 · tomcat运行控制脚本catalina.sh分析, 分析catalina.sh脚本的目的,一个是学习脚本中shell的各类用法,还有就是为编写tomcat多服务器远程启动脚本做准备,实现版本上线自动化无人干预部署,此前作者已发表“ tomcat变量环境脚本setclasspath.sh分析”来为此篇作为铺垫,需要两篇文章一起看,才能全面的分析 ... cornelius osei owusu boateng