dmesg

linuxmacos

Write the kernel messages to `stdout`. See also: `journalctl`.

Options (6)

-l, --levelboolean

Show kernel error messages

Example: sudo dmesg {{[-l|--level]}} err

-w, --followboolean

Show kernel messages and keep [w]aiting for new ones, similar to `tail --follow` (available in kernels 3.5.0 and newer)

Example: sudo dmesg {{[-w|--follow]}}

-i, --ignore-caseboolean

Show how much physical memory is available on this system

Example: sudo dmesg | grep {{[-i|--ignore-case]}} memory

-T, --ctimeboolean

Show kernel messages with a timestamp (available in kernels 3.5.0 and newer)

Example: sudo dmesg {{[-T|--ctime]}}

-H, --humanboolean

Show kernel messages in human-readable form (available in kernels 3.5.0 and newer)

Example: sudo dmesg {{[-H|--human]}}

-L, --colorboolean

Colorize output (available in kernels 3.5.0 and newer)

Example: sudo dmesg {{[-L|--color]}}

Show kernel messages

sudo dmesg

Show kernel error messages

sudo dmesg [-l|--level] err

Show kernel messages and keep [w]aiting for new ones, similar to `tail --follow` (available in kernels 3.5.0 and newer)

sudo dmesg [-w|--follow]

Show how much physical memory is available on this system

sudo dmesg | grep [-i|--ignore-case] memory

Show kernel messages 1 page at a time

sudo dmesg | less

Show kernel messages with a timestamp (available in kernels 3.5.0 and newer)

sudo dmesg [-T|--ctime]

Show kernel messages in human-readable form (available in kernels 3.5.0 and newer)

sudo dmesg [-H|--human]

Colorize output (available in kernels 3.5.0 and newer)

sudo dmesg [-L|--color]