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If you need to 'diff' two dmesg files, you will find that the timestamps cause diff-noise. Remove the timestamps so that you get to the underlying diff.
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| #!/bin/bash | |
| # dmesg-diff | |
| # Kieran Bingham 2016 | |
| # Public Domain | |
| # | |
| # Strip out Linux Kernel timestamps when performing a diff on two dmesg files | |
| # | |
| # Initial version as proof-of-concept, but already useful. | |
| # This could be extended to parse extra flags for diff for example | |
| # Uses bash temporary stream extensions to save creating tempory files | |
| # Usage | |
| # dmesg-diff file1 file2 | |
| FILE1=$1 | |
| FILE2=$2 | |
| STRIP_TS='s/^\[[[:space:]+[:digit:].]*\]//' | |
| # http://stackoverflow.com/questions/15841223/diff-while-ignoring-patterns-within-a-line-but-not-the-entire-line | |
| diff -u \ | |
| --label=$FILE1 <(sed $STRIP_TS $FILE1) \ | |
| --label=$FILE2 <(sed $STRIP_TS $FILE2) | |
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