互动教程

在浏览器中免费使用在线 Linux 终端。练习 Ubuntu bash 命令，查看虚拟文件系统并完成互动教程。

Learn how to inspect directories with pwd and ls, navigate file paths with cd, and view file contents using cat.

Master creating files with touch and echo, organizing folders with mkdir, copying with cp, and removing items with rm.

Filter logs and search large files using grep flags (-i, -n, -v) and output redirection operators.

Understand read, write, execute permissions for user, group, and others using octal modes like 755 and 644.