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Rolling back the Linux kernel can save the day when a bad update breaks your system. It should be done carefully, with backups and verification. Use it to regain a stable state, then address the root ...

This column is the third in a series dedicated to one of my favorite subjects: troubleshooting. Because my column generally is aimed more at tips and tricks and less on philosophy and design, I don't ...

Effective troubleshooting requires that you know how to break a problem into pieces, track down evidence, and that you understand your systems and applications — as well as the tools at your disposal ...