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How can you combine dmesg with awk to print only the message text from kernel logs (excluding the timestamp)?

hard📝 Application Q9 of 15
Linux CLI - System Administration
How can you combine dmesg with awk to print only the message text from kernel logs (excluding the timestamp)?
Asudo dmesg | awk '{$1=""; print $0}'
Bsudo dmesg | awk '{print $1}'
Csudo dmesg | awk '{print $1, $2}'
Dsudo dmesg | awk '{print $2, $3}'
Step-by-Step Solution
Solution:
  1. Step 1: Understand dmesg output format

    dmesg lines start with a timestamp in brackets, e.g. [12345.678].
  2. Step 2: Use awk to remove timestamp and print message

    Setting $1="" removes the first field (timestamp), then printing $0 prints the rest (message text).
  3. Step 3: Check other options

    Options printing only $1 or $1 and $2 do not correctly print the full message text without the timestamp.
  4. Final Answer:

    sudo dmesg | awk '{$1=""; print $0}' -> Option A
  5. Quick Check:

    Remove timestamp field, print message text with awk [OK]
Quick Trick: Use awk '{$1=""; print $0}' to skip first field [OK]
Common Mistakes:
  • Printing only first or first two fields misses message
  • Not removing timestamp field properly
  • Confusing field numbers in awk

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