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. Warning: DirtyDB is used. This is fine for testing but not recommended for production. -- To suppress these warning messages change suppressErrorsInPadText to true in your settings.json *what is software? --the unix filesystem says: it's a file ----what is a file? ----in the filesystem, if you ask xxd: ------ it's a set of hexadecimal bytes -------what is hexadecimal bytes? ------ -b it's a set of binary 01s ----if you ask objdump -------it's a set of instructions --side channel researching also says: ----it's a set of instructions --the computer glossary says: ----it's a computer's programs, plus the procedure for their use http://etherbox.local/home/pi/video/A_Computer_Glossary.webm#t=02:26 ------ a computer's programs is a set of instrutions for performing computer operations *what is a flowchart? --a flowchart is a graphic version of a program, in which symbols are used to represent oerations ------ where are ///
abstraction layers from file to physical disc. a file( if you ask ls -i) -- is a set of bytes on the hard drive addressed by an inode. ---- an inode is located in the beginning of a blockgroup where the file is located ---- an inode is linking to a certain portion of a hard drive. ( a selection of blocks) ------ a block is a selection of bytes hold in some sector in the hard drive -------- a sector, asking the LBA, is a continuous list ---------- an LBA sector refers back to a Cilinder-Head-Sector partitionining of the hard drive ------------ cilinder head sector points to actual 0s and 1s in the harddrive -------------- 0s and 1s in the disk are magnetic fields impressed on a physical disc
each layer of abstraction addresses the malfunctionings and the grey areas that fall out some model, to offer a smooth surface to act for the next layer of abstraction so when something is misread in the hard drive, for example, it gets dealt with at a lower level than the runnoing program