. ▁ ▁Al pine ▁Linux ▁can ▁be ▁installed ▁as ▁a ▁run - from - RAM ▁operating ▁system . ▁The ▁L BU ▁( Al pine ▁Local ▁Back up ) ▁tool ▁option ally ▁allows ▁all ▁configuration ▁files ▁to ▁be ▁back ed ▁up ▁to ▁an ▁AP K ▁overlay ▁file ▁( us ually ▁short ened ▁to ▁ap kov l ), ▁a ▁tar . gz ▁file ▁that ▁by ▁default ▁stores ▁a ▁copy ▁of ▁all ▁changed ▁files ▁in ▁/ etc ▁( with ▁the ▁option ▁to ▁add ▁more ▁directories ). ▁This ▁allows ▁Al pine ▁to ▁work ▁reli ably ▁in ▁demand ing ▁embedded ▁environments ▁or ▁to ▁( tem por arily ) ▁surv ive ▁partial ▁disk ▁fail ures ▁as ▁sometimes ▁experienced ▁in ▁public ▁cloud ▁environments . ▁ ▁A ▁hard ened ▁kernel ▁was ▁included ▁in ▁the ▁default ▁distribution ▁for ▁up ▁to ▁and ▁including ▁Al pine ▁ 3 . 7 , ▁which ▁a ids ▁in ▁reducing ▁the ▁impact ▁of ▁explo its ▁and ▁vulner abilities . ▁All ▁packages ▁are ▁also ▁compiled ▁with ▁stack - sm ash ing ▁protection ▁to ▁help ▁mit ig ate ▁the ▁effects ▁of ▁user land ▁buffer ▁overflow s . ▁ ▁Al pine ▁Linux , ▁by ▁default , ▁includes ▁patch es ▁that ▁allow ▁using ▁efficient ▁mes hed ▁V PN s ▁using ▁the ▁DM V PN ▁standard . ▁ ▁Al pine ▁Linux ▁has ▁reli ably ▁had ▁excellent ▁support ▁of ▁X en ▁hyper vis ors ▁in ▁up - to - date ▁versions , ▁which ▁avoid s ▁issues ▁as ▁experienced ▁with ▁Enter prise ▁Distribution s . ▁( The ▁standard ▁Linux ▁hyper visor ▁K VM , ▁is