If you can enter commands into the shell, you can write shell scripts (also known as Bourne shell scripts). A shell script is a series of commands written in a file; the shell reads the commands from the file just as it would if you typed them into a terminal. 如果你能在 shell 中...
This article is an extension of our first article,understanding linux shell scripting. In that piece, we introduced you to scripting. Continuing from there, we aim to maintain the momentum and not disappoint you in this article. Script 1: Drawing a Special Pattern The following “Special_Pattern...
Shell scripting can be an effective tool for quickly automating repetitive and error-prone administration tasks. The examples in this article provide an introduction to the possibilities available but are far from comprehensive. Every system has distinct quirks and foibles and a unique configuration. ...
From previous examples, you might remember that the exit code of grep is 0 if the string is found. The example above uses this in one line to print a message if root is in the password or a different message if it isn’t. The difference here is that instead of an “fi” to close...
Shell scripting, specifically Bash scripting, is a great way to automate repetitive or tedious tasks on your systems. Why type when you can schedule and run ...
This explains both of the bash for loop methods, and provides 12 different examples on how to use the bash for loop in your shell scripts. Bookmark this article for future reference, as this is the only article you would ever need to refer on how to use bash for loops with examples. ...
Try these examples on the command line to see how the command works: 如果你需要从文件名中去掉扩展名或者去掉完整路径中的目录,可以使用basename命令。 在命令行上尝试以下示例,以了解该命令的工作原理: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 $ basename example.html .html $ basename /usr/...
Chapter 8:Examples of Shell Scripts Logic Development: Shell script to print given numbers sum of all digit Shell script to print contains of file from given line number to next given number of lines Shell script to say Good morning/Afternoon/Evening as you log in to system ...
本书的代码包也托管在 GitHub 上,网址为github.com/PacktPublishing/Learn-Linux-Shell-Scripting-Fundamentals-of-Bash-4.4。如果代码有更新,将会在现有的 GitHub 仓库上进行更新。 我们还有其他代码包,来自我们丰富的书籍和视频目录,可在github.com/PacktPublishing/上找到。快去看看吧! 下载彩色图片 我们还提供了一...
2. Simple Backup bash shell script #!/bin/bash tar -czf myhome_directory.tar.gz /home/linuxconfig 3. Variables In this example we declare simple bash variable and print it on the screen ( stdout ) with echo command. #!/bin/bash ...