--- Libc/Libc-262/gen/exec.3
+++ Libc/Libc-498/gen/exec.3
@@ -30,18 +30,18 @@
 .\" SUCH DAMAGE.
 .\"
 .\"     @(#)exec.3	8.3 (Berkeley) 1/24/94
-.\" $FreeBSD: src/lib/libc/gen/exec.3,v 1.16 2001/10/01 16:08:50 ru Exp $
+.\" $FreeBSD: src/lib/libc/gen/exec.3,v 1.23 2003/09/10 19:24:32 ru Exp $
 .\"
 .Dd January 24, 1994
 .Dt EXEC 3
 .Os
 .Sh NAME
 .Nm execl ,
+.Nm execle ,
 .Nm execlp ,
-.Nm execle ,
-.Nm exect ,
 .Nm execv ,
-.Nm execvp
+.Nm execvp ,
+.Nm execvP
 .Nd execute a file
 .Sh LIBRARY
 .Lb libc
@@ -49,17 +49,43 @@
 .In unistd.h
 .Vt extern char **environ ;
 .Ft int
-.Fn execl "const char *path" "const char *arg" ...
-.Ft int
-.Fn execlp "const char *file" "const char *arg" ...
-.Ft int
-.Fn execle "const char *path" "const char *arg" ...
-.Ft int
-.Fn exect "const char *path" "char *const argv[]" "char *const envp[]"
-.Ft int
-.Fn execv "const char *path" "char *const argv[]"
-.Ft int
-.Fn execvp "const char *file" "char *const argv[]"
+.Fo execl
+.Fa "const char *path"
+.Fa "const char *arg0"
+.Fa ... /* "(char *)0" */
+.Fc
+.Ft int
+.Fo execle
+.Fa "const char *path"
+.Fa "const char *arg0"
+.Fa ...
+.Fa /*
+.Bk -words
+.Fa "(char *)0" "char *const envp[]" */
+.Ek
+.Fc
+.Ft int
+.Fo execlp
+.Fa "const char *file"
+.Fa "const char *arg0"
+.Fa ... /* "(char *)0" */
+.Fc
+.Ft int
+.Fo execv
+.Fa "const char *path"
+.Fa "char *const argv[]"
+.Fc
+.Ft int
+.Fo execvp
+.Fa "const char *file"
+.Fa "char *const argv[]"
+.Fc
+.Ft int
+.Fo execvP
+.Fa "const char *file"
+.Fa "const char *search_path"
+.Fa "char *const argv[]"
+.Fc
 .Sh DESCRIPTION
 The
 .Nm exec
@@ -75,7 +101,7 @@
 is to be executed.
 .Pp
 The
-.Fa "const char *arg"
+.Fa "const char *arg0"
 and subsequent ellipses in the
 .Fn execl ,
 .Fn execlp ,
@@ -97,10 +123,10 @@
 pointer.
 .Pp
 The
-.Fn exect ,
 .Fn execv ,
-and
-.Fn execvp
+.Fn execvp ,
+and
+.Fn execvP
 functions provide an array of pointers to null-terminated strings that
 represent the argument list available to the new program.
 The first argument, by convention, should point to the file name associated
@@ -113,14 +139,12 @@
 .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 parameter list
-or the pointer to the argv array with an additional parameter.
-This additional parameter is an array of pointers to null-terminated strings
+pointer that terminates the list of arguments in the argument list
+or the pointer to the argv array with an additional argument.
+This additional argument is an array of pointers to null-terminated strings
 and
 .Em must
 be terminated by a
@@ -134,23 +158,31 @@
 Some of these functions have special semantics.
 .Pp
 The functions
-.Fn execlp
-and
-.Fn execvp
+.Fn execlp ,
+.Fn execvp ,
+and
+.Fn execvP
 will duplicate the actions of the shell in searching for an executable file
 if the specified file name does not contain a slash
 .Dq Li /
 character.
-The search path is the path specified in the environment by
+For
+.Fn execlp
+and
+.Fn execvp ,
+search path is the path specified in the environment by
 .Dq Ev PATH
 variable.
 If this variable isn't specified,
 the default path is set according to the
 .Dv _PATH_DEFPATH
 definition in
-.Aq paths.h ,
+.In paths.h ,
 which is set to
 .Dq Ev /usr/bin:/bin .
+For
+.Fn execvP ,
+the search path is specified as an argument to the function.
 In addition, certain errors are treated specially.
 .Pp
 If an error is ambiguous (for simplicity, we shall consider all
@@ -185,11 +217,6 @@
 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
@@ -203,11 +230,14 @@
 The shell.
 .El
 .Sh ERRORS
-.Fn Execl ,
+The
+.Fn execl ,
 .Fn execle ,
-.Fn execlp
-and
-.Fn execvp
+.Fn execlp ,
+.Fn execvp ,
+and
+.Fn execvP
+functions
 may fail and set
 .Va errno
 for any of the errors specified for the library functions
@@ -215,10 +245,9 @@
 and
 .Xr malloc 3 .
 .Pp
-.Fn Exect
-and
+The
 .Fn execv
-may fail and set
+function may fail and set
 .Va errno
 for any of the errors specified for the library function
 .Xr execve 2 .
@@ -226,7 +255,6 @@
 .Xr sh 1 ,
 .Xr execve 2 ,
 .Xr fork 2 ,
-.Xr ktrace 2 ,
 .Xr ptrace 2 ,
 .Xr environ 7
 .Sh COMPATIBILITY
@@ -249,11 +277,11 @@
 .Tn POSIX
 standard.
 .Pp
-Traditionally, the functions
+Traditionally, the
 .Fn execlp
 and
 .Fn execvp
-ignored all errors except for the ones described above and
+functions ignored all errors except for the ones described above and
 .Er ETXTBSY ,
 upon which they retried after sleeping for several seconds, and
 .Er ENOMEM
@@ -286,11 +314,17 @@
 The behaviour was changed to match the behaviour of
 .Xr sh 1 .
 .Sh STANDARDS
-.Fn Execl ,
+The
+.Fn execl ,
 .Fn execv ,
 .Fn execle ,
-.Fn execlp
+.Fn execlp ,
 and
 .Fn execvp
+functions
 conform to
 .St -p1003.1-88 .
+The
+.Fn execvP
+function first appeared in
+.Fx 5.2 .