dmesg
dmesg is a Linux command in the System Info category, rated intermediate difficulty. Displays kernel ring buffer messages (boot messages, hardware detection). The syntax is dmesg [options]. It returns kernel log messages. A practical example: dmesg | less dmesg | grep -i error dmesg -w # Watch mode (live updates) A close relative is uname, which displays system information (kernel name, hostname, architecture). A close relative is df, which reports disk space usage for mounted filesystems. A close relative is du, which estimates file and directory space usage. More about this category: Linux system info commands — uname, df, du, free, uptime, lscpu, and more. View system information and hardware details. Related System Info commands: uname, df, du, free, uptime, lscpu, lsusb, lspci. This page is part of the free Linux Reference documentation covering 304+ commands, each with syntax, options, practical examples, and a difficulty rating.