diff --git a/tools/rapport_activite.sh b/tools/rapport_activite.sh
index 35563976..eb55db93 100755
--- a/tools/rapport_activite.sh
+++ b/tools/rapport_activite.sh
@@ -36,31 +36,31 @@ generateReport()
     local yearMonth="$3"
     echo -e "================================================================="
     echo
-    httpRequestCount=$(zgrep "$monthEnglish" /var/log/apache2/paste.chapril.org/paste.chapril.org-acces.log*|grep $year|wc -l)
+    httpRequestCount=$(zgrep "$monthEnglish" /var/log/apache2/paste.chapril.org/paste.chapril.org-acces.log*|grep -c "$year")
     echo "Nombre total de requêtes http                 = $httpRequestCount"
 
-    trueHttpRequestCount=$(zgrep "$monthEnglish" /var/log/apache2/paste.chapril.org/paste.chapril.org-acces.log*|grep $year|grep -vi bot|grep -v check|wc -l)
+    trueHttpRequestCount=$(zgrep "$monthEnglish" /var/log/apache2/paste.chapril.org/paste.chapril.org-acces.log*|grep "$year"|grep -vi bot|grep -c -v check)
     echo "Nombre de vraies requêtes http                = $trueHttpRequestCount"
 
-    botRequestCount=$(zgrep "$monthEnglish" /var/log/apache2/paste.chapril.org/paste.chapril.org-acces.log*|grep $year|grep -i bot|grep -v check|wc -l)
+    botRequestCount=$(zgrep "$monthEnglish" /var/log/apache2/paste.chapril.org/paste.chapril.org-acces.log*|grep "$year"|grep -i bot|grep -c -v check)
     echo "Nombre de requêtes bot                        = $botRequestCount"
 
-    errorsRequestCount=$(zgrep "$monthEnglish" /var/log/apache2/paste.chapril.org/paste.chapril.org-error.log*|grep $year|wc -l)
+    errorsRequestCount=$(zgrep "$monthEnglish" /var/log/apache2/paste.chapril.org/paste.chapril.org-error.log*|grep -c "$year")
     echo "Nombre de requêtes http en erreur             = $errorsRequestCount"
 
-    createdPasteCount=$(grep "$yearMonth" /var/www/paste.chapril.org/paste.log | grep CREATE|wc -l)
+    createdPasteCount=$(grep "$yearMonth" /var/www/paste.chapril.org/paste.log | grep -c CREATE)
     echo "Nombre de pastes créés ce mois                = $createdPasteCount"
 
-    deletedPasteCount=$(grep "$yearMonth" /var/www/paste.chapril.org/paste.log | grep DELETE|wc -l)
+    deletedPasteCount=$(grep "$yearMonth" /var/www/paste.chapril.org/paste.log | grep -c DELETE)
     echo "Nombre de pastes supprimés ce mois            = $deletedPasteCount"
 
-    commentCount=$(grep "$yearMonth" /var/www/paste.chapril.org/paste.log | grep COMMENT|wc -l)
+    commentCount=$(grep "$yearMonth" /var/www/paste.chapril.org/paste.log | grep -c COMMENT)
     echo "Nombre de commentaires ce mois                = $commentCount"
 
-    readPasteCount=$(grep "$yearMonth" /var/www/paste.chapril.org/paste.log | grep READ|wc -l)
+    readPasteCount=$(grep "$yearMonth" /var/www/paste.chapril.org/paste.log | grep -c READ)
     echo "Nombre de lectures ce mois                    = $readPasteCount"
 
-    echo "Nombre de lectures ce mois - les commentaires = $(($readPasteCount-$commentCount))"
+    echo "Nombre de lectures ce mois - les commentaires = $((readPasteCount-commentCount))"
     echo
 }
 
@@ -70,7 +70,7 @@ echo
 if [ "$#" = 1 ] && [ "$1" = "-h" ]; then
     help
 elif [ "$#" = 1 ] && [ "$1" = "-p" ]; then
-    if [ $(date +%m) -gt 1 ]; then
+    if [ "$(date +%m)" -gt 1 ]; then
 	precedingMonth="$(($(date +%m)-1))"
 	year="$(date +%Y)"
 	if [ $precedingMonth -lt 10 ]; then
@@ -78,37 +78,35 @@ elif [ "$#" = 1 ] && [ "$1" = "-p" ]; then
 	else
 	    yearMonth="$year-$precedingMonth"
 	fi
-    else [ $(date +%m) -eq 1 ]
+    else [ "$(date +%m)" -eq 1 ]
 	 precedingMonth=12
 	 year="$(($(date +%Y)-1))"
     fi
-    mois="$year$precedingMonth"
     monthEnglish=$(LANG=en_EN.UTF-8;date -d $year-$precedingMonth-01 +%b)
     echo -e "Rapport d'activité du service paste.chapril.org du mois $monthEnglish $year"
     generateReport "$monthEnglish" "$year" "$yearMonth"
 elif [ "$#" -eq 2 ]; then
-    if !(let "$1") 2>/dev/null; then
+    if ! (let "$1") 2>/dev/null; then
 	echo -e "Le mois doit être numérique."
 	help
-    elif ([ $1 -lt 1 ] || [ $1 -gt 12 ]); then
+    elif ([ "$1" -lt 1 ] || [ "$1" -gt 12 ]); then
 	echo -e "Numéro du mois non valable $1."
 	help
-    elif !(let "$2") 2>/dev/null; then
+    elif ! (let "$2") 2>/dev/null; then
 	echo -e "L'année doit être numérique."
 	help
-    elif  [ $2 -lt 2018 ] || [ $2 -gt $(date +%Y) ]; then 
+    elif  [ "$2" -lt 2018 ] || [ "$2" -gt "$(date +%Y)" ]; then 
 	echo -e "Année non valable $2."
 	help
-    elif  [ $2 -le 2017 ] || [ $2 -ge $(($(date +%Y)+1)) ] ; then
+    elif  [ "$2" -le 2017 ] || [ "$2" -ge $(($(date +%Y)+1)) ] ; then
 	echo -e "Pas de données pour ce mois."
 	help
     else
-	if [ $1 -lt 10 ]; then
+	if [ "$1" -lt 10 ]; then
 	    yearMonth="$2-0$1"
 	else
 	    yearMonth="$2-$1"
 	fi    
-	month="$2$1"
 	monthEnglish=$(LANG=en_EN.UTF-8;date -d "$2-$1-01" +%b)
 	year="$2"
 	echo -e "Rapport d'activité du service paste.chapril.org du mois $monthEnglish $2"
@@ -116,7 +114,6 @@ elif [ "$#" -eq 2 ]; then
     fi
 elif [ "$#" -eq 0 ]; then
     yearMonth="$(date +%Y-%m)"
-    month="$(date +%Y%m)"
     monthEnglish=$(LANG=en_EN.UTF-8;date +%b)
     year="$(date +%Y)"
     echo -e "Rapport d'activité du service paste.chapril.org du mois $(date +%b) 20$(date +%y)"