diff --git a/changelog b/changelog
index 4dc150a..2fbc986 100644
--- a/changelog
+++ b/changelog
@@ -19,6 +19,13 @@
 
   unhide-tcp.h
   - Add definition of boolean values.
+  
+  manpages
+  - Add new options -u and -H
+  
+  All files
+  - Update GPL notive as per the recommendations of the FSF
+  - Update versions and copyright dates 
 
 2020-01
   unhide-output.c
diff --git a/man/es/unhide.8 b/man/es/unhide.8
index 41f4d05..451f9c1 100644
--- a/man/es/unhide.8
+++ b/man/es/unhide.8
@@ -1,4 +1,4 @@
-.TH "UNHIDE" "8" "Marzo 2012" "Comandos de administración" ""
+.TH "UNHIDE" "8" "Enero 2021" "Comandos de administración" ""
 .SH "NOMBRE"
 unhide \(em Herramienta forense para descubrir procesos ocultos
 .SH "SINOPSIS"
@@ -36,6 +36,14 @@ Muestra la versión y sale
 .TP 
 \fB\-v\fR
 Fuerza la salida debug con los mensajes de error (se puede repetir varias veces \-vv)
+.TP
+\fB\-u\fR
+Realiza envíos sin buffer a la salida estándar.
+Esta opción puede ser útil cuando unhide es iniciado por otro proceso (por ejemplo, es utilizado por unhideGui).
+.TP
+\fB\-H\fR
+Proporcionar un resultado un poco más humano.
+Esta opción añade mensajes finales a las pruebas e indica cuando no se encuentran procesos ocultos.
 .PP 
 .PP 
 .SH "TEST_LIST"
diff --git a/man/fr/unhide.8 b/man/fr/unhide.8
index 83cdd6c..95b1133 100644
--- a/man/fr/unhide.8
+++ b/man/fr/unhide.8
@@ -1,4 +1,4 @@
-.TH "unhide" "8" "Mars 2012" "Commandes d'administration"
+.TH "unhide" "8" "Janvier 2021" "Commandes d'administration"
 .SH "NOM"
 unhide \(em outil d'investigation post\-mortem pour trouver des processus cachés
 .SH "SYNOPSIS"
@@ -40,6 +40,14 @@ Affiche la version et sort.
 \fB \-v\fR
 Affichage prolixe, affiche les message d'avertissement (par défaut : ne pas afficher).
 Cette option peut être répétée plus d'une fois.
+.TP
+\fB\-u\fR
+Fait des écritures sans tampon (buffer) vers la sortie standard.
+Cette option peut être utile lorsque unhide est lancé par un autre processus (par exemple, elle est utilisé par unhideGui).
+.TP
+\fB\-H\fR
+Fournir un résultat légèrement plus adapté à l'humain.
+Cette option ajoute des messages de fin aux tests et indique quand aucun processus caché n'est trouvé.
 .PP
 .PP
 .SH "TEST_LIST"
diff --git a/man/unhide.8 b/man/unhide.8
index 31f8ed4..56f4c37 100644
--- a/man/unhide.8
+++ b/man/unhide.8
@@ -1,4 +1,4 @@
-.TH "UNHIDE" "8" "March 2012" "Administration commands"
+.TH "UNHIDE" "8" "January 2021" "Administration commands"
 .SH "NAME"
 unhide \(em forensic tool to find hidden processes
 .SH "SYNOPSIS"
@@ -40,6 +40,14 @@ Show version and exit
 \fB\-v\fR
 Be verbose, display warning message (default : don't display).
 This option may be repeated more than once.
+.TP
+\fB\-u\fR
+Do unbuffered write to stdout.
+This option could be useful when unhide is spawned by another process (e.g. it's used by unhideGui).
+.TP
+\fB\-H\fR
+Provide a slightly human frienlier output.
+This option adds ending messages to tests and indicates when no hidden process is found.
 .PP
 .PP
 .SH "TEST_LIST"
diff --git a/sanity-tcp.sh b/sanity-tcp.sh
index c9f30d0..3bae5a0 100755
--- a/sanity-tcp.sh
+++ b/sanity-tcp.sh
@@ -2,7 +2,7 @@
 
 #	sanity.sh -- a growing testsuite for unhide-tcp.
 #
-# Copyright (C) 2010 Patrick Gouin.
+# Copyright (C) 2010-2021 Patrick Gouin.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/sanity.sh b/sanity.sh
index 50a5a5a..936368a 100755
--- a/sanity.sh
+++ b/sanity.sh
@@ -2,7 +2,7 @@
 
 #	sanity.sh -- a growing testsuite for unhide.
 #
-# Copyright (C) 2010 Patrick Gouin.
+# Copyright (C) 2010-2021 Patrick Gouin.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/ss b/ss
index e4a0f68..4cdbd48 100755
--- a/ss
+++ b/ss
@@ -1,5 +1,22 @@
 #!/bin/sh
 
+# Copyright (C) 2010-2021 Patrick Gouin.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# Original Author: Patrick Gouin
+
 set -e
 
 # echo "Le 1er paramètre est  : $1" >&2
diff --git a/ss-ref b/ss-ref
index 9976bf7..1725787 100644
--- a/ss-ref
+++ b/ss-ref
@@ -2,7 +2,7 @@
 
 #	sanity.sh -- a growing testsuite for unhide.
 #
-# Copyright (C) 2010 Patrick Gouin.
+# Copyright (C) 2010-2021 Patrick Gouin.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/unhide-linux-bruteforce.c b/unhide-linux-bruteforce.c
index f4788c9..9f72b6f 100644
--- a/unhide-linux-bruteforce.c
+++ b/unhide-linux-bruteforce.c
@@ -3,6 +3,8 @@
 */
 
 /*
+Copyright © 2010-2021 Yago Jesus & Patrick Gouin
+
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
diff --git a/unhide-linux-compound.c b/unhide-linux-compound.c
index 53458cd..31f0ee6 100644
--- a/unhide-linux-compound.c
+++ b/unhide-linux-compound.c
@@ -3,6 +3,8 @@
 */
 
 /*
+Copyright © 2010-2021 Yago Jesus & Patrick Gouin
+
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
diff --git a/unhide-linux-procfs.c b/unhide-linux-procfs.c
index ee03e16..65d3949 100644
--- a/unhide-linux-procfs.c
+++ b/unhide-linux-procfs.c
@@ -3,6 +3,8 @@
 */
 
 /*
+Copyright © 2010-2021 Yago Jesus & Patrick Gouin
+
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
diff --git a/unhide-linux-syscall.c b/unhide-linux-syscall.c
index d6d7bff..61ce7eb 100644
--- a/unhide-linux-syscall.c
+++ b/unhide-linux-syscall.c
@@ -3,6 +3,8 @@
 */
 
 /*
+Copyright © 2010-2021 Yago Jesus & Patrick Gouin
+
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
diff --git a/unhide-linux.c b/unhide-linux.c
index b9d26ce..1962937 100644
--- a/unhide-linux.c
+++ b/unhide-linux.c
@@ -3,6 +3,8 @@
 */
 
 /*
+Copyright © 2010-2021 Yago Jesus & Patrick Gouin
+
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
@@ -49,8 +51,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 // header
 const char header[] =
-   "Unhide 20210123\n"
-   "Copyright © 2013 Yago Jesus & Patrick Gouin\n"
+   "Unhide 20210124\n"
+   "Copyright © 2010-2021 Yago Jesus & Patrick Gouin\n"
    "License GPLv3+ : GNU GPL version 3 or later\n"
    "http://www.unhide-forensics.info\n\n"
    "NOTE : This version of unhide is for systems using Linux >= 2.6 \n\n";
diff --git a/unhide-linux.h b/unhide-linux.h
index def4103..e78577f 100644
--- a/unhide-linux.h
+++ b/unhide-linux.h
@@ -3,6 +3,8 @@
 */
 
 /*
+Copyright © 2010-2021 Yago Jesus & Patrick Gouin
+
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
diff --git a/unhide-output.c b/unhide-output.c
index e9702db..2d5a834 100644
--- a/unhide-output.c
+++ b/unhide-output.c
@@ -3,6 +3,8 @@
 */
 
 /*
+Copyright © 2010-2021 Yago Jesus & Patrick Gouin
+
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
diff --git a/unhide-output.h b/unhide-output.h
index b8bc942..a96d377 100644
--- a/unhide-output.h
+++ b/unhide-output.h
@@ -3,6 +3,8 @@
 */
 
 /*
+Copyright © 2010-2021 Yago Jesus & Patrick Gouin
+
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
diff --git a/unhide-posix.c b/unhide-posix.c
index d08669d..7b5d572 100644
--- a/unhide-posix.c
+++ b/unhide-posix.c
@@ -3,6 +3,8 @@
 */
 
 /*
+Copyright © 2010-2021 Yago Jesus & Patrick Gouin
+
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
@@ -217,8 +219,8 @@ void checkgetsid() {
 
 int main (int argc, char *argv[]) {
 
-	strncpy(scratch,"Unhide-posix 20130526\n", sizeof(scratch)-1) ;
-	strncat(scratch, "Copyright © 2013 Yago Jesus & Patrick Gouin\n", sizeof(scratch)-strlen(scratch)-1);
+	strncpy(scratch,"Unhide-posix 20210124\n", sizeof(scratch)-1) ;
+	strncat(scratch, "Copyright © 2013-2021 Yago Jesus & Patrick Gouin\n", sizeof(scratch)-strlen(scratch)-1);
 	strncat(scratch, "License GPLv3+ : GNU GPL version 3 or later\n", sizeof(scratch)-strlen(scratch)-1);
 	strncat(scratch, "http://www.unhide-forensics.info\n\n", sizeof(scratch)-strlen(scratch)-1);
 	strncat(scratch, "NOTE : This is legacy version of unhide, it is intended\n\
diff --git a/unhide-tcp-fast.c b/unhide-tcp-fast.c
index 256114e..a98f1d9 100644
--- a/unhide-tcp-fast.c
+++ b/unhide-tcp-fast.c
@@ -3,6 +3,8 @@
 */
 
 /*
+Copyright © 2010-2021 Yago Jesus & Patrick Gouin
+
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
diff --git a/unhide-tcp.c b/unhide-tcp.c
index 5db4a44..9e873ae 100644
--- a/unhide-tcp.c
+++ b/unhide-tcp.c
@@ -3,6 +3,8 @@
 */
 
 /*
+Copyright © 2010-2021 Yago Jesus & Patrick Gouin
+
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
@@ -36,8 +38,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 // header
 const char header[] =
-       "Unhide-tcp 20210123\n"
-       "Copyright © 2013 Yago Jesus & Patrick Gouin\n"
+       "Unhide-tcp 20210124\n"
+       "Copyright © 2013-2021 Yago Jesus & Patrick Gouin\n"
        "License GPLv3+ : GNU GPL version 3 or later\n"
        "http://www.unhide-forensics.info\n";
 
diff --git a/unhide-tcp.h b/unhide-tcp.h
index 54bdd1e..c75359f 100644
--- a/unhide-tcp.h
+++ b/unhide-tcp.h
@@ -3,6 +3,8 @@
 */
 
 /*
+Copyright © 2010-2021 Yago Jesus & Patrick Gouin
+
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
diff --git a/unhideGui.py b/unhideGui.py
index 8149723..dac9383 100755
--- a/unhideGui.py
+++ b/unhideGui.py
@@ -1,6 +1,8 @@
 #!/bin/python3
 
 """
+Copyright © 2010-2021 Patrick Gouin
+
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
diff --git a/unhide_rb.c b/unhide_rb.c
index 5da200d..af0fa1d 100644
--- a/unhide_rb.c
+++ b/unhide_rb.c
@@ -3,6 +3,8 @@
 */
 
 /*
+Copyright © 2010-2021 Yago Jesus & Patrick Gouin
+
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
@@ -500,9 +502,9 @@ int main (int argc, char *argv[])
    int found_something = FALSE ;
    int phase1_ko = FALSE ;
 
-	strncpy(scratch,"Unhide_rb 20130526\n", sizeof(scratch)-1) ;
+	strncpy(scratch,"Unhide_rb 20210124\n", sizeof(scratch)-1) ;
 
-	strncat(scratch, "Copyright © 2013 Yago Jesus & Patrick Gouin\n", sizeof(scratch)-strlen(scratch)-1);
+	strncat(scratch, "Copyright © 2013-2021 Yago Jesus & Patrick Gouin\n", sizeof(scratch)-strlen(scratch)-1);
 	strncat(scratch, "License GPLv3+ : GNU GPL version 3 or later\n", sizeof(scratch)-strlen(scratch)-1);
 	strncat(scratch, "http://www.unhide-forensics.info\n\n", sizeof(scratch)-strlen(scratch)-1);
 	strncat(scratch, "NOTE : This version of unhide_rb is for systems using Linux >= 2.6 \n\n", sizeof(scratch)-strlen(scratch)-1);