进行文本处理是一种常见的命令行技巧,用于对文本进行分割、提取和处理。下面是对这两个工具的详细解释和使用示例: 1. cut命令: - 概念:cut命令用于从文本行中提取指定的字段(列)。 ...
After running the above command in which, we specified the cut command to just print the first field of the file using the delimiter “:”. Conclusion Today we introduced you to the Linux command “cut” which is used to cut some part of the specified portion of any file. After giving ...
$HOME: 指向用户目录,符号~表示当前用户目录 关于sudo 执行时,虽然用 root 权限,但此时 $HOME 并不是/root/目录,可以通过 sudo -Hcommand使用 root 权限同时 $HOME 值为 "/root/" 常用管道重定向 delimiter 是一个标记符,原则上是随意,但一般使用EOF cat<<EOF Hello, my friend. Bye. EOF 个性化配置 其...
Shell command lines are extremely useful in your daily work as data scientists. There are many more examples and use cases that could be explored. And as you will see there are often always different ways to achieve a particular result using a wide range of available shell commands and relate...
mancommand l.df 显示磁盘使用情况。 m.du 显示文件名中文件和目录的磁盘使用情况(du -s只给出一个总数)。 dufilename n.last 列出您最后登录的指定用户。 last yourUsername o.ps 列出您的进程。 ps -u yourusername p.kill 使用您所提供的ID杀死(结束)进程。
25 Bash Scripts Examples 1. Hello World 2. Echo Command 3. Sleep Command 4. Wait Command 5. Comments 6. Get User Input 7. Loops 8. Create an Array 9. Conditional Statements 10. Functions 11. Display String Length 12. Extract String ...
Ctrl+L– clears the screen (same effect as the “clear” command). Ctrl+S– pause all command output to the screen. If you have executed a command that produces verbose, long output, use this to pause the output scrolling down the screen. ...
experience, I’ve written Bash 101 Hacks eBook that contains 101 practical examples on both Bash command line and shell scripting. If you’ve been thinking about mastering Bash, do yourself a favor and read this book, which will help you take control of your Bash command line and shell ...
Ctrl + y– paste word or text that was cut using one of the deletion shortcuts (such as the one above) after the cursor Ctrl + xx– move between start of command line and current cursor position (and back again) Alt + b– move backward one word (or go to start of word the curso...
file_size=`ls -l file2.txt | cut -d " " -f5` echo "Size of the file is: $file_size bytes" Output: Conclusion In this module, we have looked into all aspects of file operations in bash and would highly encourage you to have hands-on practice with all the commands to get acquain...