Shell Programming and Scripting

tr '\n' ' ' < infile > outfile

#!/bin/bash
var=$(</path/to/file)
echo "$var"

/* r3000.c read whole file of any character type
  step thru read buffer , write 2999 characters skip 3000th (remove every 3000th character)
  usage: ./r3000 inputfile outputfile
  to compile use gcc:  
      gcc r3000.c -o r3000
      
*/
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/stat.h>

size_t filesize(char *fname)
{
    struct stat st;
    if(stat(fname, &st)==-1)
    {
      perror("File open error on input");
      exit(1);
    }
    return st.st_size;
}
int main(int argc, char **argv)
{
    size_t  len=filesize(argv[1]);
    unsigned char *buf=malloc(len);
    unsigned char *p=buf;
    ssize_t n=0;
    FILE *in=fopen(argv[1], "rb");
    FILE *out=fopen(argv[2], "wb");

    if(out!=NULL && in !=NULL && buf!=NULL)
    {
       n=read(fileno(in), p, len);
       if(n==len)
       {
          int i=0;
          while(i<=len)
          {          
             write(fileno(out), p, 2999);
             i+=3000;
             p+=3000;
          }
       }
       else
       {
           perror("file read error");
           exit(1);
       }
    }
    else
    {
        perror("Fatal error");
        exit(1);
    }
    
    return 0;
}

awk '{while(s=substr($0,1,3000)){printf "%s",s;sub(substr($0,1,3001),x)}}END{print x}' RS= infile