Shell Programming and Scripting

$ ls sh
sh
$ file sh
sh: symbolic link to `dash'
$ file sh | sed 's/.*`\(.*\)\x27/\1/' 
dash
$

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

int
main(int argc, char *argv[]) {
        char    buf[2048];      // buffer for symbolic link
        int     err = 0;        // non-zero if errors found
        int     i;              // loop control
        int     len;            // lenght of cymlink data

        for(i = 1; i <argc; i++)
                if((len = (int)readlink(argv[i], buf, sizeof(buf))) == -1) {
                        perror(argv[i]);
                        err = 1;
                } else  printf("%*.*s\n", len, len, buf);
        return(err);
}

make readlink

var=$(./readlink symlink)