.Os
.Sh NAME
.Nm execl ,
-.Nm execlp ,
.Nm execle ,
-.Nm exect ,
+.Nm execlp ,
.Nm execv ,
.Nm execvp ,
.Nm execvP
.In unistd.h
.Vt extern char **environ ;
.Ft int
-.Fn execl "const char *path" "const char *arg" ... /* "(char *)0" */
-.Ft int
-.Fn execlp "const char *file" "const char *arg" ... /* "(char *)0" */
+.Fo execl
+.Fa "const char *path"
+.Fa "const char *arg0"
+.Fa ... /* "(char *)0" */
+.Fc
.Ft int
.Fo execle
-.Fa "const char *path" "const char *arg" ...
+.Fa "const char *path"
+.Fa "const char *arg0"
+.Fa ...
.Fa /*
.Bk -words
.Fa "(char *)0" "char *const envp[]" */
.Ek
.Fc
.Ft int
-.Fn exect "const char *path" "char *const argv[]" "char *const envp[]"
+.Fo execlp
+.Fa "const char *file"
+.Fa "const char *arg0"
+.Fa ... /* "(char *)0" */
+.Fc
.Ft int
-.Fn execv "const char *path" "char *const argv[]"
+.Fo execv
+.Fa "const char *path"
+.Fa "char *const argv[]"
+.Fc
.Ft int
-.Fn execvp "const char *file" "char *const argv[]"
+.Fo execvp
+.Fa "const char *file"
+.Fa "char *const argv[]"
+.Fc
.Ft int
-.Fn execvP "const char *file" "const char *search_path" "char *const argv[]"
+.Fo execvP
+.Fa "const char *file"
+.Fa "const char *search_path"
+.Fa "char *const argv[]"
+.Fc
.Sh DESCRIPTION
The
.Nm exec
is to be executed.
.Pp
The
-.Fa "const char *arg"
+.Fa "const char *arg0"
and subsequent ellipses in the
.Fn execl ,
.Fn execlp ,
pointer.
.Pp
The
-.Fn exect ,
.Fn execv ,
.Fn execvp ,
and
.Pp
The
.Fn execle
-and
-.Fn exect
-functions also specify the environment of the executed process by following
-the
+function also specifies the environment of the executed process
+by following the
.Dv NULL
pointer that terminates the list of arguments in the argument list
or the pointer to the argv array with an additional argument.
these functions will execute the shell with the path of
the file as its first argument.
(If this attempt fails, no further searching is done.)
-.Pp
-The function
-.Fn exect
-executes a file with the program tracing facilities enabled (see
-.Xr ptrace 2 ) .
.Sh RETURN VALUES
If any of the
.Fn exec
.Fn execl ,
.Fn execle ,
.Fn execlp ,
-.Fn execvp
+.Fn execvp ,
and
.Fn execvP
functions
.Xr malloc 3 .
.Pp
The
-.Fn exect
-and
.Fn execv
-functions
-may fail and set
+function may fail and set
.Va errno
for any of the errors specified for the library function
.Xr execve 2 .
.Xr sh 1 ,
.Xr execve 2 ,
.Xr fork 2 ,
-.Xr ktrace 2 ,
.Xr ptrace 2 ,
.Xr environ 7
.Sh STANDARDS
.Fn execl ,
.Fn execv ,
.Fn execle ,
-.Fn execlp
+.Fn execlp ,
and
.Fn execvp
functions