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@koukibadr started using tool Docker , 2 weeks, 2 days ago.

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@varbear shared a link, 2 weeks, 3 days ago

FAUN.dev()

Why are top university websites serving p0rn? It comes down to shoddy housekeeping.

Researcher Alex Shakhov found scammers commandeering staleCNAMErecords. They hijack university subdomains (eg.berkeley.edu,columbia.edu,washu.edu) and serve p0rn and scam pages. Shakhov found hundreds of abused subdomains across at least34universities. He counted thousands of hijacked pages indexed .. read more

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@varbear shared a link, 2 weeks, 3 days ago

FAUN.dev()

PostgreSQL MVCC, Byte by Byte

PostgreSQL's MVCC stores two 32-bit XIDs per tuple -xminandxmax. The transaction snapshot decides visibility per tuple. Updates append new tuples and mark the old withxmax.VACUUMreclaims versions only when no active snapshot can see them. Long-runningREPEATABLE READsnapshots pin versions and cause b.. read more

Snapper is a command-line tool developed by SUSE for managing filesystem snapshots. It allows users to create, delete, compare, and restore snapshots of their system or data. A snapshot is a read-only point-in-time copy of a filesystem, useful for recovering from system changes or errors. Snapper integrates deeply with the SUSE ecosystem and works primarily with Btrfs, though it also supports LVM with thin provisioning. It can automatically take snapshots before and after software updates or system modifications, helping users track what changed and roll back if necessary. By using pre and post snapshots, Snapper provides a simple way to undo changes or restore files without requiring full system backups. It also supports automatic cleanup routines to manage disk space efficiently. In practice, Snapper serves as both a safety net and a diagnostic tool, making it easier to maintain system stability and recover quickly from mistakes or failed updates.