Detailed Objective

Weight: 1

Description:
Candidates should be able to recognise and identify boot loader and kernel specific stages and utilise kernel boot messages to diagnose kernel errors. This objective includes being able to identify and correct common hardware issues and be able to determine if the problem is hardware or software.

• Key knowledge area(s):
  • /proc filesystem
  • Various system and daemon log files
  • Content of /, /boot , and /lib/ modules
  • Screen output during bootup
  • Kernel syslog entries in system logs (if entry is able to be gained)
  • Tools and utilities to analyse information about the used hardware
  • Tools and utilities to trace software

• The following is a partial list of the used files, terms and utilities:
  • dmesg
  • /sbin/lspci
  • /usr/bin/lsdev
  • /sbin/lsmod
  • /sbin/modprobe
  • /sbin/insmod
  • /bin/uname
  • strace
  • strings
  • ltrace
  • lsof