SOLUTION

814c5723c21e7e90a3eae36c8df3c513


Kernel System Calls
-------------------
The program checks for a diractory called "welcomeToDevOpsTheHardWay".
If not, it creates a new folder with this name and creates a new file inside the folder called "goodluck".
After that the program verifies recovery, writes in the file "There you go... tell me what I do next" and closes the file

Broken Symlink
-------------------
When you created the symlink, use a relative path that specifies a location in relation to the current working directory.
When they changed the location of the file "latest-backup.obj" they also changed the inode where the file should use it.
In order to change the location of the file and not change the inode we will use an absolute path:
In -s ../backups/$FILENAME backups/latest-backup.obj

Binary Numbers
--------------
1.111 = (1*2^2) + (1*2^1) + (1*2^0) = 7
  100 = (1*2^2) + (0*2^1) + (0*2^0) = 4
  10110 = (1*2^4) + (0*2^3) + (1*2^2) + (1*2^1) + (0*2^0) = 22
2. The available decimal range represented by 8 bits binary number is 255, so the range would be 0—255 (256 values).
3.The numbers represented between -255 and 255 in the binary language are represented by 8 bits, to represent the negative numbers we will add a check digit (0) on the left side of the number and then use the two's complement method.
For example:
To represent the negative number of 233 we will perform the following actions:
- We will convert the number 233 to a binary number - 11101001
- Add a bit to the left of the number (check digit) - 011101001
- We will convert the numbers from 1 to 0 and from 0 to 1 - 100010110
- We add 1 - 100010110
100010110 is the binary number that represents 233 by 9 bits
4.In order to represent a decimal number using 8-bit binary numbers, we divide the binary number in this way:
The first number (left) represents whether the number is positive or negative (0 for positive and 1 for negative)
The next three numbers will be the decimal number in a simple binary calculation
The next four numbers will be the fractional part of the number
For example (number 12.3):
In binary calculation the number will look like this - 1100.0100
After encoding the exponent and calculating the mantasia, the next 4 bits are 1000
So the decimal representation is 01101000.