|   |   -   |    e   |    p   |
|:-:|:-----:|:------:|:------:|
| l | execl | execle | execlp |
| v | execv | execve | execvp |

---

* int execl(char const *path, char const *arg0, ...);
* int execle(char const *path, char const *arg0, ..., char const *envp[]);
* int execlp(char const *file, char const *arg0, ...);
* int execv(char const *path, char const *argv[]);
* int execve(char const *path, char const *argv[], char const *envp[]);
* int execvp(char const *file, char const *argv[]);

---

* l – Command-line arguments are passed individually (a list) to the function.
* v – Command-line arguments are passed to the function as an array (vector) of pointers.

---

* e – An array of pointers to environment variables is explicitly passed to the new process image.
* p – Uses the PATH environment variable to find the file named in the path argument to be executed.