Getting the Job Done by Systems
- Steps to be followed in our recipes is executed by cpu
- To remember any value we deal with RAM
- Any Script/Program which we will be executing will be run by the OS as a process. Each process will have pid, cpu shares and memory
- When we ask os to run any program it run step by step.
- step in python is a new line almost the same for bash.
- When program needs to remember or access any values it refers RAM.
- Every operating system has a concept of Environment variables. These are the values which are shared across all the processes in the single system.
- Memory used by one process or the values in the memory of one process cannot be accessed by other processes.
Allocating Memory in Programs/Scripts
- To allocate memory we need to specify size we need and it returns address which is generally a hexadecimal number
- We cannot use hexadecimals to access memory, so use a mathematical concept (x = 5). Here lets assume x is alias to your memory location
index = 5
pi = 3.14
- For specifying size in programming, the easier way is to categorize size by types of Data
- integer
- decimal
- character
- string
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Declaring Variables
- Powershell
- Bash/Shell
- Python
- Powershell
- Ensure you install python and git bash
Activity
- Lets create a file which works on bash/shell to remember a value and print it
- Repeat the same in powershell as well as python
- Refer Here for the scripts in 3 different languages.
