← из прошлого урока
You understand PATH: the shell searches for binaries across a list of
directories. But who put those binaries on the system? Next come the
package managers: dpkg/apt, sources, inventory, and "where did this
file come from".
Базовый
10 мин · урок входит в курс «Базовый»
A Linux distribution is the kernel plus hundreds of thousands of packages
on top. On Ubuntu and Debian the package manager is apt (high level)
over dpkg (low level). Package files are laid out in a standard
hierarchy; see fhs (binaries in /usr/bin, configs in /etc, apt
state in /var/lib/apt). This lesson is READ-only: your sandbox is on an
isolated network with no internet, so you cannot download anything new.
But everything already installed is yours to study in full.
Чтобы запустить sandbox и пройти этот урок целиком, нужен соответствующий курс. Внутри - ещё много практических уроков того же уровня и сквозной прогресс.
дальше →
You know how software gets installed. Next is how to find that software
and its configs by hand: find by metadata (name, size, time) and grep
by content. Pairing the two is the key to security and SRE scenarios.