Displaying a message man page

If your distribution provides message man pages or you have generated man pages for your distribution, you can display message details.

Before you begin

Ensure that the message man pages are available under man/man9 where the path to man is included in the MANPATH environment variable. Enter

echo
$MANPATH

to display the eligible man directories.

If your Linux kernel has been compiled with the CONFIG_KMSG_IDS option, IBM Z® specific kernel messages have a message identifier. For example, the following message has the message identifier os_info.d3cf4c:

os_info.d3cf4c: crashkernel: addr=0x8000000 size=256M

Procedure

Enter a command of this form, to display a message man page:

# man <message_identifier>

Example

Enter the following command to display the man page for message os_info.d3cf4c:

# man os_info.d3cf4c

The corresponding man page looks like this:

os_info.d3cf4c(9)                                            os_info.d3cf4c(9)

Message
       os_info.d3cf4c: crashkernel: addr=0x%lx size=%lu

Severity
       Informational

Parameters
       @1: address

       @2: size

Description
       Linux  is running in kdump mode and reports the address and size of the
       memory area that was reserved for kdump by the previously running  pro-
       duction kernel.

User action
       None.

LINUX                           Linux Messages               os_info.d3cf4c(9)