Sandbox: hands-on Linux in your browser

Name, options and arguments, a date format and an && chain - all checked.

Absolute and relative paths, a hidden file, ls -l.

Create, copy, move and delete files by pattern - all step-checked.

Redirection, appending and a pipeline that dissects a log.

head, tail, wc and line numbering on a ready file.

find by name and type, -exec over the results, which and type.

--help, type, which and whereis: ask the system, not the internet.

A script, variables, a loop and strict mode - all step-checked.

export, alias and your own PATH directory - persistent, via ~/.bashrc.

Interfaces, the loopback address and listening sockets - read-only.

Start, find, prioritise and terminate processes - all step-checked.

CPU, memory, a kernel parameter and cmdline - read from /proc.

Pattern search, substitution and field counting on live logs.

ps, free, load average and vmstat - a snapshot of the system.

df, du and a size analysis: where space and inodes go.

Hard and symbolic links, inodes and the link count - on live files.

Pack, check compression and restore a directory, compared with the original.

Create a user and group and set rwx permissions on a shared file.