fputs - Linux

Overview

fputs writes or appends a null-terminated string to a file. It is typically used for writing to files in a low-level or memory-efficient manner, and can be combined with other file-handling functions for advanced operations.

Syntax

#include <stdio.h>

int fputs(const char *str, FILE *stream);

Options/Flags

This command does not take any options or flags.

Examples

Writing to a File:

#include <stdio.h>

int main() {
  FILE *fp = fopen("myfile.txt", "w");
  fputs("Hello, world!", fp);
  fclose(fp);
  return 0;
}

Appending to a File:

#include <stdio.h>

int main() {
  FILE *fp = fopen("myfile.txt", "a");
  fputs("Hello, world!", fp);
  fclose(fp);
  return 0;
}

Common Issues

• File permissions: Ensure that the file you are writing to has the appropriate permissions.
• File not found: Confirm that the file you are trying to open exists at the specified path.
• Disk space: Check if there is sufficient disk space available for writing to the file.

Integration

fputs can be integrated with other file-handling commands, such as fopen, fclose, fseek, and ftell, to create more complex file manipulation tasks. For example, you could use fputs to write data to a specific offset in a file.

Related Commands

• fprintf: Writes formatted output to a file stream.
• fwrite: Writes binary data to a file stream.
• fscanf: Reads formatted input from a file stream.
• fread: Reads binary data from a file stream.