Remove non-ASCII characters in a file [duplicate]

Answer 1

You can write a C program like this:

#include 
#include 

int main(int argc, char **argv)
{
   FILE *fin = fopen("source_file", "rb");
   FILE *fout = fopen("target_file", "w");
   int c;
   while ((c = fgetc(fin)) != EOF) {
       if (isprint(c))
          fputc(c, fout);
   }
   fclose(fin);
   fclose(fout);
   return 0;
}

Note: error checks were avoided for simplicity.

Compile it with:

$ gcc -W source_code.c -o convert

Run it with:

$ ./convert