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Week 09 Assignments #3: Modules

• Read:
  • Z910-SP0-MEMO.txt
  • Z910-SP1-USER.txt
  • Z910-SP2-ROOT.txt
  • Z910-SP3-KERN.txt
• Assignment:
  • (root) Write kernel log to file WEEK09-KERNEL-LOG.txt
  • (root) Change owner file WEEK09-KERNEL-LOG.txt
  • (user) COPY the result to SP_RESULT/W09/WEEK09-KERNEL-LOG.txt

tail -f /var/log/kern.log | grep --line-buffered ' ZCZC ' | tee WEEK09-KERNEL-LOG.txt

• Tainted Kernel Check (ROOT)
  • BIT 12=1 (4096) means: ‘Externally-built (“out-of-tree”) module was loaded’

for i in $(seq 18); do echo $(($i-1)) $(($(cat /proc/sys/kernel/tainted)>>($i-1)&1));done

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