System Grab Bag

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dmesg

Write the kernel messages to stdout. More information: https://manned.org/dmesg.
  • Show kernel messages:
    dmesg
  • Show kernel error messages:
    dmesg --level err
  • Show kernel messages and keep reading new ones, similar to tail -f (available in kernels 3.5.0 and newer):
    dmesg -w
  • Show how much physical memory is available on this system:
    dmesg | grep -i memory
  • Show kernel messages 1 page at a time:
    dmesg | less
  • Show kernel messages with a timestamp (available in kernels 3.5.0 and newer):
    dmesg -T
  • Show kernel messages in human-readable form (available in kernels 3.5.0 and newer):
    dmesg -H
  • Colorize output (available in kernels 3.5.0 and newer):
    dmesg -L

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