101-500 Deutsch試験無料問題集「Lpi LPIC-1 Exam 101, Part 1 of 2, version 5.0 (101-500 Deutsch Version) 認定」
Mit welchem Befehl wird der aktuelle Inhalt des Kernel-Ringpuffers in der Befehlszeile gelesen und angezeigt?
(Geben Sie NUR den Befehl ohne Pfad oder Parameter an.)
(Geben Sie NUR den Befehl ohne Pfad oder Parameter an.)
正解：
dmesg
Explanation
The dmesg command is used to print or control the kernel ring buffer. The kernel ring buffer is a special kind of buffer that stores the messages generated by the kernel, such as the boot messages, the hardware errors, the driver information, etc. The kernel ring buffer is a fixed-size circular buffer, which means that when it is full, the oldest messages are overwritten by the new ones. The dmesg command can show the messages in the kernel ring buffer, as well as filter, save, or clear them. The syntax of the dmesg command is:
dmesg [options]
The options are optional, and they can modify the behavior of the dmesg command, such as changing the output format, the timestamp, the level, the facility, the color, etc. For more information, see the dmesg man page1 or the Linuxize tutorial2.
Explanation
The dmesg command is used to print or control the kernel ring buffer. The kernel ring buffer is a special kind of buffer that stores the messages generated by the kernel, such as the boot messages, the hardware errors, the driver information, etc. The kernel ring buffer is a fixed-size circular buffer, which means that when it is full, the oldest messages are overwritten by the new ones. The dmesg command can show the messages in the kernel ring buffer, as well as filter, save, or clear them. The syntax of the dmesg command is:
dmesg [options]
The options are optional, and they can modify the behavior of the dmesg command, such as changing the output format, the timestamp, the level, the facility, the color, etc. For more information, see the dmesg man page1 or the Linuxize tutorial2.