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0-read_textfile.c
0-read_textfile.c
 
 
1-create_file.c
1-create_file.c
 
 
2-append_text_to_file.c
2-append_text_to_file.c
 
 
3-cp.c
3-cp.c
 
 
README.md
README.md
 
 
holberton.h
holberton.h
 
 

README.md

0x15. C - File I/O

Description

What you should learn from this project:

  • Look for the right source of information online
  • How to create, open, close, read and write files
  • What are file descriptors
  • What are the 3 standard file descriptors, what are their purpose and what are their POSIX names
  • How to use the I/O system calls open, close, read and write
  • What are and how to use the flags O_RDONLY, O_WRONLY, O_RDWR
  • What are file permissions, and how to set them when creating a file with the open system call
  • What is a system call
  • What is the difference between a function and a system call

0. Tread lightly, she is near

  • Write a function that reads a text file and prints it to the POSIX standard output.

1. Under the snow

  • Create a function that creates a file.

2. Speak gently, she can hear

  • Write a function that appends text at the end of a file.

3. cp

  • Write a program that copies the content of a file to another file.

4. elf

  • Write a program that displays the information contained in the ELF header at the start of an ELF file.

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