Simple save command code.

gistfile1.c

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#DEFINE BUFSIZE 100
#DEFINE UNCODECMD "uncore %s %s core.%d"

/* Save program state as executable. Name of saved file is savename, returns 0 on success. */
int save(char *savename)
{
    int cpid;
    char buf[BUFSIZE];
    char exepath[BUFSIZE];
    cpid=fork();
    if (cpid<0) return -1;
    if (cpid==0) {
        abort();
        return 0; // Will start here when saved file is "loaded".
    }
    if (readlink("/proc/self/exe",exepath,BUFSIZE)<0) return -1;
    exepath[BUFSIZE]='\0';
    if (snprintf(buf,BUFSIZE,UNCORECMD,savename,exepath,cpid)<0) 
        return -1;
    buf[BUFSIZE]='\0';
    if (system(buf)!=0) return -1;
    return 0;
}