It's also freely available from https://kea.nu/files/textbooks/humblesec/linuxbasicsforhackers.pdf https://kea.nu/files/textbooks/humblesec/linuxbasicsforhacke.

It's also freely available from https://kea.nu/files/textbooks/humblesec/linuxbasicsforhackers.pdf https://kea.nu/files/textbooks/humblesec/linuxbasicsforhacke... and plenty other places with a quick search.