🪴 Stash

OS Lab 1

2 min read

Windows Basic Commands

  1. dir: Lists files and directories in the current directory.
  2. cd: Changes the current directory.
  3. md: Creates a new directory.
  4. rd: Removes (deletes) a directory.
  5. copy: Copy files.
  6. move: Move files.
  7. del: Delete files.
  8. ren: Rename files.
  9. type: Displays the content of a text file.
  10. tree: Generates directory structure.
  11. edit: Opens a simple text editor. (or, use notepad)
  12. chkdsk: Checks a disk for errors.
  13. systeminfo: Shows Your PC’s Details
  14. powercfg /batteryreport: Battery report generation.
  15. tree: Displays a graphical representation of the directory structure.
  16. ping: Sends ICMP Echo Request packets to test network connectivity.
  17. ipconfig: Displays IP configuration information.
  18. date: Displays or sets the system date.
  19. time: Displays or sets the system time.
  20. set: Displays, sets, or removes environment variables.
  21. tasklist: Displays a list of currently running tasks.
  22. taskkill: Terminates one or more running tasks.
  23. fc: Compares two files or sets of files.
  24. help: Displays help information for commands.
  25. exit: Exits the Command Prompt.

Running Programs in Windows

Running C/C++ codes (windows)

g++ input.cpp
.\a.exe

Running assembly codes (windows)

Download and install nasm compiler,

winget install nasm

Write a simple .asm code,

; hello.asm (Windows x64, NASM)
 
default rel
extern printf
global main
 
section .data
    msg db "Hello, World!", 10, 0
 
section .text
main:
    sub rsp, 40        ; shadow space + stack alignment
    lea rcx, [msg]    ; first argument (Windows x64)
    call printf
    add rsp, 40
 
    xor eax, eax
    ret

Compile and run the code,

nasm -f win64 hello.asm -o hello.obj	
gcc hello.obj -o hello.exe
.\hello.exe

Running python/… codes

Directly run the relevant command,

python source.txt

Running Programs in Android

Search for termux fdroid and install it,

Install the required packages, like,

pkg install clang

Use a CLI based text editor for editing files,

nano input.cpp

Finally compile and run,

g++ input.cpp
.\a.out

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