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#include <unistd.h>

#include <stdlib.h>

#include <string.h>

#include <errno.h>

int execvep(path, argv, envp)

const char * path;

const char * argv[];

const char * envp[];

{

        if (!strchr(path, '/')) {

                char partial[128];

                char * p = getenv("PATH");

                char * p2;

                if (!p)

                        p = "/bin:/usr/bin";

                for (;p && *p;) {

                        strcpy(partial, p);

                        p2 = strchr(partial, ':');

                        if (p2)

                                *p2 = '\0';

                        if (strlen(partial))

                                strcat(partial, "/");

                        strcat(partial, path);

                        execve(partial, argv, envp);

                        if (errno != ENOENT)

                                return -1;

                        p2 = strchr(p, ':');

                        if (p2)

                                p = p2 + 1;

                        else

                                p = 0;

                }

                return -1;

        } else

                return execve(path, argv, envp);

}