Working with Files

3: Working with Files

Linux File Structure 

• Directories
• Files and Devices

System Calls and Device Drivers
Library Functions
Low-Level File Access

• write
• read
• open
• Initial Permissions
• Other System Calls for Managing Files
• The Standard I/O Library
• fopen
• fread
• fwrite
• fclose
• fflush
• fseek
• fgetc, getc, and getchar
• fputc, putc, and putchar
• fgets and gets

Formatted Input and Output

• printf, fprintf, and sprintf
• scanf, fscanf, and sscanf
• Other Stream Functions
• Stream Errors
• Streams and File Descriptors

File and Directory Maintenance

• chmod
• chown
• unlink, link, and symlink
• mkdir and rmdir
• chdir and getcwd 

Scanning Directories

• opendir
• readdir
• telldir
• seekdir
• closedir

Errors

• strerror
• perror

The /proc File System
Advanced Topics: fcntl and mmap

• fcntl
• mmap