brunch 0.0.14

No project description provided

<b>BRUNCH</b>
	<b># DRIVE OPERATIONS</b>
	
	<b>DANGER</b>	
		THIS MODULE IS STILL AN EARLY VERSION,
		USAGE IS NOT RECOMMENDED.
		
		ALSO, THIS IS NOT FINANCIAL ADVICE,
		
		AND ANY ACRONYMS OF THE "MD" VARIETY
		STAND FOR "MARYLAND"
	
	<b>CAUTION</b>
		<b>THIS MODULE IS USED FOR ERASING PERSISTANT STORAGE DEVICES LIKE:</b>
		<b>SOLID STATE DRIVES, HARD DRIVES, SD CARDS, MICRO SD CARDS, FLASH DRIVES</b>
	
	
	<b>FUNCTIONS</b>
		THESE NEED ACCESS TO BLOCK SPECIAL FILE PATH WHERE DRIVE IS ATTACHED.
			EXAMPLE: /dev/sd----
		
		CONCEPTS:
			MEAL:  THIS IS THE ENTIRE SPAN OF INDEXES TO BE READ
			PLATE: THIS IS THE ONE SPAN OF INDEXES WITHIN THE MEAL
			
		"DRIVE INFORMATION" SECTION BELOW HAS INFO PERTAINING TO FINDING
		THE BYTES COUNT OF A DRIVE.
		
		<b>ERASE</b>
			<code>
				[TCSH] BRUNCH ERASE ENTIRELY --drive-path /dev/sd0000 --last-byte-index 31914983423 
				
				#
				#	It's possible to check with:
				#
				[TCSH] xxd -len 20 -seek 31914983420 /dev/sde
			</code>
		
		<b>SCULPT (WRITE)</b>
			<code>
			
				#
				#	CAUTION:
				#
				#		EXAMPLE: /dev/sd----
				# 
				DRIVE_PATH = ""
			
				LOOP = 1
				def PROGRESS (PARAMS):
					nonlocal LOOP;
					INDEXES = PARAMS ["INDEXES"]
					SIZE = PARAMS ["SIZE"]
					LAST_LOOP = PARAMS ["LAST_LOOP"]
			
					if (LOOP == 1000):
						PERCENT = str (100 * (INDEXES [1] / DRIVE_BYTES))
						print (
							INDEXES[0],
							INDEXES[1] - INDEXES[0], 
							"%:", PERCENT
						)
						
						LOOP = 1;
					
					LOOP += 1
			
				BYTES_PER_PLATE = 512 * 512;
				BYTES_INDEXES = [
					0, 
					DRIVE_BYTES - 1 
				]
			
				SCULPT.START ({
					"DRIVE PATH": DRIVE_PATH,
					
					"BYTES INDEXES": BYTES_INDEXES,		
					"BYTES FOR PLATE": PLATE,
					
					"PROGRESS": PROGRESS
				})
			
			
			
			</code>
		
		
		<b>SCAN (READ)</b>	
			<code>
				BRUNCH SCAN BYTES --drive-path /dev/sdb --indexes '[ 0, 99 ]' --bytes-per-plate 512
			</code>
	
			<code>
				import BRUNCH.SCAN as SCAN			
					
				#
				#	CAUTION:
				#
				#		EXAMPLE: /dev/sd----
				# 
				DRIVE_PATH = ""	
					
				BYTE_STRING = b''
				def PROGRESS (PARAMS):
					nonlocal BYTE_STRING;
					BYTE_STRING += PARAMS ['PLATE']
				
				SCAN.START ({
					"DRIVE PATH": DRIVE_PATH, 
					
					"BYTES INDEXES": [ 0, 28 ],		
					"BYTES PER PLATE": 10,
					
					"PROGRESS": PROGRESS
				})	
				
				print (BYTE_STRING)
				#
				#	b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
				#
			</code>
		
	<b>DRIVE INFORMATION</b>
		#
		#	lsblk -b -p
		#	lsblk -b -p --json
		#	lsblk -S
		#
		[TCSH] lsblk -b -p
	
			NAME        MAJ:MIN RM        SIZE RO TYPE MOUNTPOINTS
			/dev/sda      8:0    0 40018599936  0 disk 
			├─/dev/sda1   8:1    0   629145600  0 part /boot/efi
			├─/dev/sda2   8:2    0  1073741824  0 part /boot
			└─/dev/sda3   8:3    0 38313918464  0 part /home
													   /
			/dev/sdb      8:16   0 40018597888  0 disk 
			/dev/zram0  252:0    0  8589934592  0 disk [SWAP]
		
		[TCSH] cat /proc/partitions
		
		[TCSH] hdparm -v /dev/sdb
		
		[TCSH] blockdev --getsz /dev/sdb
			
			78161324
			
		#
		#	https://en.wikipedia.org/wiki/Util-linux
		#	https://github.com/util-linux/util-linux
		#
		[TCSH] fdisk -l
			
			Disk /dev/sdc: 37.27 GiB, 40018597888 bytes, 78161324 sectors
			Disk model: high speed      
			Units: sectors of 1 * 512 = 512 bytes
			Sector size (logical/physical): 512 bytes / 512 bytes
			I/O size (minimum/optimal): 512 bytes / 512 bytes
			
		THEREFORE:
			40,018,597,888
		
			DRIVE PATH: /dev/sdb
			BYTE INDEXES: [ 0, 40018597887 ]
			
			40018597888 / 78161324 = 512

			#
			#	/dev/sda is the operating system drive
			#
			
	<b>PERTINENT</b>
		XXD:
			#
			#	SCAN START OF DRIVE
			#
			xxd -len 100 /dev/sde
		
			#
			#	SCAN END OF DRIVE:
			#		40018597888 - 100 = 40018597788
			#
			xxd -len 100 -seek 40018597788 /dev/sdb
			
			xxd -len 20 -seek 32010928128 /dev/sde
			xxd -len 20 -seek 31914983424 /dev/sde
			#
			#	THERE MIGHT BE UNWRITABLE BYTES AFTER LAST BYTE..
			#
			xxd -seek 32010928128 /dev/sdb
			
			
		
		CREATING BLOCK SPECIAL FILES:
			(IF YOU, FOR INSTANCE, ACCIDENTALLY OVERWRITE /dev/sdb)
			
			THERE'S ALMOST DEFINITELY MORE TO IT THAN THIS:
				#
				# [TCSH] file /dev/sda	
				#
				[TCSH] sudo mknod /dev/sdb b 8 0