Club Drupal

Afin de gagner du temps et d'éviter les erreurs humaines, des scripts ont été écrits tout au long du projet. Certains sont même exécutés automatiquement toutes les semaines.

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h1. Les tâches planifiées

Pour exécuter ces tâches régulièrement, on utilise le "crontab":http://fr.wikipedia.org/wiki/Crontab. Il s'agit d'un programme installé sur notre serveur.

Pour voir et modifier la liste des actions :

# se connecter au serveur : <code>ssh assos@sas1.centrale-marseille</code>

# taper la commande pour voir le crontab <code>crontab -l</code>

# taper la commande pour modifier le crontab <code>crontab -e</code>. /!\ Ne pas effectuer cette opération avant de s'être renseigné sur "vi":http://fr.wikipedia.org/wiki/Vi (l'éditeur de texte utilisé qui n'est pas vraiment intuitif :p) et sur "la syntaxe du crontab":http://fr.wikipedia.org/wiki/Crontab#Modification !

{{tip(Pour utiliser un autre editeur que vi taper : export EDITOR=editor_name exemple : vim, nano)}}

Voici la liste des tâches effectuées régulièrement.

h2. La réinitialisation des variables dangeureuses

Sur l'installation d7 principalement : une fois par semaine

Cette tâche consiste à réinitialiser certaines variables qui donnent des droits considérés comme trop permissifs donc dangereux aux administrateurs des sites. En voici la liste :

<pre>

<code class="bash">

drushall_atest vset error_level 0 --yes

</code>

</pre>

Cette commande permet de ne pas afficher les messages d'erreurs aux utilisateurs autre que les administrateurs. En effet, ils contiennent parfois des informations sensibles sur l'installation et ne doivent donc pas être divulgués à n'importe qui.

<pre>

<code class="php">

drushall_atest php-eval variable_set\(\'allow_authorize_operations\',FALSE\)\;

</code>

</pre>

Cette commande  permet de ne pas autoriser les utilisateurs à installer et mettre à jour des modules via l'interface du site (fonctionnalité introduite dans drupal7). En effet, seul le club Drupal maintient les codes des projet, afin d'en garantir la pérennité.

<pre

<code class="php">

drushall_atest vset --always-set reverse_proxy TRUE

drushall_atest vset --always-set --format=json reverse_proxy_addresses '["147.94.19.16","147.94.19.17"]'

</code>

</pre>

Ces commandes permettent de déclarer à drupal les serveurs proxy du CRI afin d'éviter qu'il ne répertorie tous les visiteurs comme ayant l'adresse des sus-cités serveurs. **Pas fini : voir http://assos.centrale-marseille.fr/content/t%C3%A2che/d%C3%A9clarer-les-proxy-du-cri-%C3%A0-drupal**

h3. Comment le lancer ?

N'importe où, taper <code>reinit_var.sh</code>.

h2. La sauvegarde des bases de données

Sur les installations d6 et d7 : une fois par semaine

On utilise les [[Scripts_et_taches_planifiees#Tout-sauvegarder|scripts de sauvegarde créés par le club Drupal]].

h2. La purge des sauvegardes de bdd

Sur les installations d6 et d7 : toutes les semaines

Cette tâche utilise le script de [[Scripts_et_taches_planifiees#purge_des_sauvegardes.sh|purge des sauvegardes]] afin de libérer de l'espace disque en supprimant les sauvegardes de bdd les plus vieilles.

h1. Liste des scripts à disposition

Les scripts utilisés sont hébergés dans le répertoire bin du compte assos.

h2. all-reset-permissions.sh

<pre>

<code class="php">

#!/bin/sh

. scripts-config.sh

# This script puts the correct permissions to sites folders, settings.php and scripts.

######### drupal 6

for dir in `find $d6_dir_sites -type d -maxdepth 1 -mindepth 1 ! -name all ! -name images ! -name languages` ; do

    chmod 755 $dir

    chmod 400 $dir/settings.php

done

######### drupal 7

for dir in `find $d7_dir_sites -type d -maxdepth 1 -mindepth 1 ! -name all` ; do

    chmod 755 $dir

    chmod 400 $dir/settings.php

done

####### bin

chmod -R 700 $dir_scripts

</code>

</pre>

h2. contrib-usage.sh

<pre>

<code class="php">

#!/bin/sh

. scripts-config.sh

. scripts-utils.sh

# ARGS: Drupal_version, project_status, project_name

# List sites that have the project_name with the corresponding project_status.

check_arguments $# 3

if [ $1 = d6 ] ; then

    cd $d6_dir_sites

else

    cd $d7_dir_sites

fi

for dir in `find . -maxdepth 1 -mindepth 1 -type d ! -name all ! -name languages ! -name images` ; do

    # List non-core projects that correspond to the status.

    # Keep project_name if listed.

    # Count line result. 0 if not listed or 1 if listed.

	# Print site_dir if listed.

    cd $dir;

	if [ 1 -eq `drush pml --no-core --status=$2 | grep $3 | wc -l` ] ; then

        echo $dir; 

    fi

done

</code>

</pre>

h2. d6-all-drush.sh

<pre>

<code class="php">

#!/bin/sh

. scripts-config.sh

. scripts-utils.sh

# ARGS: drush_command

check_arguments $# 1

for dir in `find $d6_dir_sites -maxdepth 1 -mindepth 1 -type d ! -name all ! -name languages ! -name images` ; do

    cd $dir

    echo $dir

    drush $*

done

</code>

</pre>

h2. d6-all-dump-full.sh

<pre>

<code class="php">

#!/bin/sh

. scripts-config.sh

current_date=`date "+%Y-%m-%d-%Hh%Mm%Ss"`

# Dump D6 database with webassos user.

mysqldump --single-transaction webassos -h myweb.serv.int -u webassos --password=HBVH2ljgyZCA0AP251DY > $d6_dir_full_backup/webassos/$current_date.webassos.sql

# Dump D6 form database with forum user.

mysqldump forum -h myweb.serv.int -u forum --password=dtcAltF12 > $d6_dir_full_backup/forum/$current_date.forum.sql

</code>

</pre>

h2. d6-all-update-contrib.sh

<pre>

<code class="php">

#!/bin/sh

. scripts-config.sh

d6-all-drush.sh -y en update

# Launch cron to check for updates.

d6-all-drush.sh -q cron

d6-all-drush.sh cc all

d6-all-dump-full.sh

d6-all-drush.sh -y upc --no-core

d6-all-drush.sh -y updb

d6-all-drush.sh -y dis update

# Cron report.

d6-all-drush.sh cron

</code>

</pre>

h2. d6-dump-individual.sh

<pre>

<code class="php">

#!/bin/sh

. scripts-config.sh

# ARGS: auto or manual, site_prefix

# WARNING : backup are regularly flushed, put your backup in a safe place.

cd $dir_individual_backup

#récupération des tables du site dans le fichier liste_tables.temp

tables='_%'

liste="$1$tables"

mysql -h myweb.serv.int -u webassos --password=HBVH2ljgyZCA0AP251DY -BNe "show tables like '"$liste"'" webassos | tr '\r\n' ' ' > liste_tables.temp

#transformation de cette liste en une variable

var=$(cat liste_tables.temp)

#sauvegarde de toutes ces tables

current_date=`date "+%Y-%m-%d-%Hh%Mm%Ss"`

suffixe="_dump$current_date.sql"

fichier="$1$suffixe"

if [ $1 = 'auto' ] ; then

        mysqldump webassos -h myweb.serv.int -u webassos --password=HBVH2ljgyZCA0AP251DY $var > $d6_dir_individual_auto_backup/$fichier

    else

        mysqldump webassos -h myweb.serv.int -u webassos --password=HBVH2ljgyZCA0AP251DY $var > $d6_dir_individual_manual_backup/$fichier

    fi

#suppression du fichier temporaire utilisé

rm liste_tables.temp

</code>

</pre>

h2. d6-reset-variables.sh

<pre>

<code class="php">

#!/bin/sh

. scripts-config.sh

cd $d6_dir_sites

d6-all-drush.sh vset --always-set reverse_proxy TRUE

d6-all-drush.sh vset --always-set --format=json reverse_proxy_addresses '["147.94.19.16","147.94.19.17"]'

drush @sites ev "variable_set('update_notify_emails', array($email_multi_assos));" --yes

</code>

</pre>

h2. d7-all-drush-logged.sh

<pre>

<code class="php">

#!/bin/sh

. scripts-config.sh

. scripts-utils.sh

# ARGS: drush_command

check_arguments $# 1

for dir in `find $d7_dir_sites -maxdepth 1 -mindepth 1 -type d ! -name all` ; do

    cd $dir

    current_date=`date "+%Y-%m-%d_%Hh:%Mm"`

    echo "======$current_date======" >> $d7_dir_log/$x.log

    echo "Arguments are: $* " >> $d7_dir_log/$x.log

    drush $* >> $d7_dir_log/$x.log

    #To have the same caracters limit we needed 'end' that have 4 caracters, we used the Croate language for this ! LOL 

    echo -e "=============KRAJ=============\n" >> $d7_dir_log/$x.log

done

</code>

</pre>

h2. d7-all-drush.sh

<pre>

<code class="php">

#!/bin/sh

. scripts-config.sh

. scripts-utils.sh

# ARGS: drush_command

check_arguments $# 1

for dir in `find $d7_dir_sites -maxdepth 1 -mindepth 1 -type d ! -name all` ; do

    cd $dir

    echo $dir

    drush $*

done

</code>

</pre>

h2. d7-all-dump-full.sh

<pre>

<code class="php">

#!/bin/sh

. scripts-config.sh

current_date=`date "+%Y-%m-%d-%Hh%Mm%Ss"`

# Dump D7 databases at once.

mysqldump -h $db_server -u $db_user -pNoNo82jJ --all-databases > $d7_dir_full_backup/myassos/$current_date.d7_full.sql

</code>

</pre>

h2. d7-all-dump-individual.sh

<pre>

<code class="php">

#!/bin/sh

. scripts-config.sh

# ARGS: auto or manual

current_date=`date "+%Y-%m-%d-%Hh%Mm%Ss"`

for dir in `find $d7_dir_sites -maxdepth 1 -mindepth 1 -type d ! -name all` ; do

    cd $dir

    drush cc all

    if [ $1 = 'auto' ] ; then

        drush sql-dump --result-file="$d7_dir_individual_auto_backup/$dir/$current_date.$dir.sql"

    else

        drush sql-dump --result-file="$d7_dir_individual_manual_backup/$dir/$current_date.$dir.sql"

    fi

done

</code>

</pre>

h2. d7-all-releases-info.sh

<pre>

<code class="php">

#!/bin/sh

. scripts-config.sh

# List version of a module or theme that exists in sites/all/*

# and all versions that are available for same project on drupal.org

# modules

for dir in `find $d7_dir_sites/all/modules -maxdepth 1 -mindepth 1 -type d` ; do

    drush pm-releases $dir

done

# themes

for dir in `find $d7_dir_sites/all/themes -maxdepth 1 -mindepth 1 -type d` ; do

    drush pm-releases $dir

done

</code>

</pre>

h2. d7-all-reset-variables.sh

<pre>

<code class="php">

#!/bin/sh

. scripts-config.sh

for dir in `find $d7_dir_sites -maxdepth 1 -mindepth 1 -type d ! -name all` ; do

    cd $dir

    echo $dir

    d7-reset-variables.sh

done

</code>

</pre>

h2. d7-all-security-review.sh

<pre>

<code class="php">

#!/bin/sh

. scripts-config.sh

# grep -v success to keep site_name and error lines.

bash -c 'd7-all-drush.sh security-review |& grep -v success | mail -s "Security review" $email_multi_assos'

</code>

</pre>

h2. d7-all-update-contrib.sh

<pre>

<code class="php">

#!/bin/sh

. scripts-config.sh

d7-all-drush.sh -y en update

# Launch cron to check for updates.

d7-all-drush.sh -q cron

d7-all-drush.sh cc all

d7-all-dump-individual.sh

d7-all-drush-logged.sh -y upc --no-core

d7-all-drush.sh -y updb

d7-all-drush.sh -y dis update

# Cron report.

d7-all-drush.sh cron | mail -s "Cron report: d7-all-update-contrib.sh" $email_multi_assos

</code>

</pre>

h2. d7-all-update-localisation.sh

<pre>

<code class="php">

#!/bin/sh

. scripts-config.sh

d7-all-drush.sh -y en l10n_update

d7-all-drush.sh l10n-update-refresh

d7-all-drush.sh l10n-update

d7-all-drush.sh -y dis l10n_update

</code>

</pre>

h2. d7-create-site.sh

<pre>

<code class="php">

#!/bin/sh

. scripts-config.sh

. scripts-config-site.sh $1

. scripts-utils.sh

# ARGS: site name

######## Exceptions

check_arguments $# 1

# "-" is forbidden because it provokes database error.

if `echo $1 | grep -` ; then

    echo '"-" is forbidden in the site name'

    exit 1

fi

# Site name length must be lower or equal to 16 due to database limitations.

if [ $(echo $1 | wc -n) -le 16 ] ; then

    echo "site name can't have more than 16 characters"

    exit 1

fi

###### Initialisation

cd $d7_dir

db_password=`ask_password_db $db_server $db_user`

site_password=`gen_password`

# Check if site database already exists.

if mysql -h $db_server -u $db_user -e "USE $d7_site_name" -p$db_password 2>/dev/null ; then

    echo "Database $d7_site_name already exists"

    exit 1

fi

# Check if site folder already exists.

if [ -d $d7_site_dir ] ; then

    echo "Folder $d7_site_dir already exists"

    exit 1

fi

###### Main

mkdir $d7_site_dir

# Backup requirements

mkdir $d7_dir_individual_auto_backup/$d7_site_name

mkdir $d7_dir_individual_manual_backup/$d7_site_name

current_date=`date "+%Y-%m-%d-%Hh%Mm%Ss"`

touch $d7_dir_individual_auto_backup/$d7_site_name/$current_date.sql

touch $d7_dir_individual_auto_backup/$d7_site_name/$current_date.sql

touch $d7_dir_individual_auto_backup/$d7_site_name/$current_date.sql

# Create and grant privileges on database

mysql -h $db_server -u $db_user -e "CREATE DATABASE $d7_site_name" -p$db_password

mysql -h $db_server -u $db_user -e "GRANT ALL PRIVILEGES ON $d7_site_name.* TO '$d7_site_name'@'%' IDENTIFIED BY '$site_password'" -p$db_password

# Create settings.php

sed "s/\%\%DBUSER\%\%/$d7_site_name/ ; s/\%\%DBNAME\%\%/$d7_site_name/ ; s/\%\%DBPASS\%\%/$site_password/ ; s/\%\%nomsite\%\%/$d7_site_name/" < $d7_settings_template > $d7_site_settings

# Create symbolic link

cd $d7_dir

ln -s . $d7_site_name

# Next Instructions

echo "Go to http://assos.centrale-marseille.fr/$d7_site_name/install.php to continue."

echo "Press enter when ready to go on."

read key

# Init variables

d7-reset-variables.sh $d7_site_name

# Permissions

chmod -R 755 $d7_site_dir

chmod 400 $d7_site_settings

# Last instructions

echo "Last instructions:"

echo "- Advice the webmaster to close account creation on the website"

echo "- Give the webmaster a link to the club Drupal's tutorials "

echo "- Create a node of type \"Site\" on default"

echo "- Register the webmaster on webmasters@listes.centrale-marseille.fr"

</code>

</pre>

h2. d7-delete-site.sh

<pre>

<code class="php">

#!/bin/sh

. scripts-config.sh

. scripts-config-site.sh $1

. scripts-utils.sh

# ARGS: site name.

check_arguments $# 1

db_password=`ask_password_db $db_server $db_user`

# Delete database.

mysql -h $db_server -u $db_user -p$db_password -e "IF EXISTS DROP DATABASE $d7_site_name"

# Delete MYSQL user.

mysql -h $db_server -u $db_user -p$db_password -e "DROP USER '$d7_site_name'@'%'"

# Delete site's folder.

chmod -R 700 $d7_site_dir

rm -r $d7_site_dir

# Delete symbolic link.

rm $d7_dir/$d7_site_name

# Delete database backups.

rm -r $d7_dir_individual_auto_backup/assos.centrale-marseille.fr.$d7_site_name

rm -r $d7_dir_individual_manual_backup/assos.centrale-marseille.fr.$d7_site_name

echo "Don't forget to:"

echo "- Refresh node site on default"

echo "- Check particular behavior (normally detailed on site node)"

</code>

</pre>

h2. d7-reset-variables.sh

<pre>

<code class="php">

#!/bin/sh

. scripts-config.sh

# ARGS: [site_name]

if [ ! -z $1 ] ; then

    . scripts-config-site.sh $1

    cd $d7_site_dir

fi

current_timestamp=`date "+%s"`

####### General variables

drush -y vset --always-set reverse_proxy TRUE

drush -y vset --always-set --format=json reverse_proxy_addresses '["147.94.19.16","147.94.19.17"]'

drush -y ev "variable_set('update_notify_emails', array($email_multi_assos));"

drush -y vset error_level 0

###### Hidden captcha

drush -y en hidden_captcha

# Log wrong answers.

drush -y vset captcha_log_wrong_responses 1

# Use hidden captcha for all forms.

drush -y sqlq --db-prefix "UPDATE {captcha_points} SET module = 'hidden_captcha', captcha_type = 'Hidden CAPTCHA' WHERE module is NULL;"

# Flush captcha cache.

drush -y vdel captcha_placement_map_cache

# Randomely generate a math question as the label of the hidden captcha field.

drush -y vset hidden_captcha_label "$RANDOM + $RANDOM"

####### Piwik

drush -y en piwik

drush -y vset piwik_site_id "101"

drush -y vset piwik_url_http "http://piwik.centrale-marseille.fr/"

drush -y vset piwik_url_https "https://piwik.centrale-marseille.fr/"

# Piwik cache.

drush -y vset piwik_cache 1

drush -y vset piwik_visibility_roles "1"

# Anonymous and authenticated statistics.

drush -y vset --format=json piwik_roles '{"1":0,"2":0}'

drush -y vset piwik_page_title_hierarchy 1

# Activate local search.

drush -y vset piwik_site_search 1

###### Security review

# For untrusted roles:

# 1 : anonymous user

# 2 : authenticated user

# 3 : administrator

drush -y en security_review

drush -y ev "variable_set('security_review_untrusted_roles', array('1'));"

# Security review can't check for files permissions on multi_assos.

drush -y sqlq --db-prefix "UPDATE {security_review} SET skip = '1', skiptime = $current_timestamp, skipuid= '1' WHERE reviewcheck IN ('file_perms');"

drush -y sqlq --db-prefix "UPDATE {security_review} SET skip = '0', skiptime = 0, skipuid= NULL WHERE reviewcheck NOT IN ('file_perms');"

</code>

</pre>

h2. delete-temporary-files.sh

<pre>

<code class="php">

#!/bin/sh

. scripts-config.sh

find $dir_multi_assos -name '*~' -delete

</code>

</pre>

h2. disk-usage.sh

<pre>

<code class="php">

#!/bin/sh

. scripts-config.sh

echo -e "Quotas: 9.1 GB\n"

echo "Assos:"

du -hcs $dir_multi_assos | grep total

echo -e "\n"

echo "D6:"

cd $d6_dir_sites

du -h -d 1

echo -e "\n"

echo "D7:"

cd $d7_dir_sites

du -h -d 1

echo -e "\n"

echo "Logs:"

du -hcs $dir_log | grep total

echo -e "\n"

echo "Backups:"

cd $dir_backup

du -h -d 2

</code>

</pre>

h2. flush-files.sh

<pre>

<code class="php">

#!/bin/sh

# ARGS: number of files to keep, email address

# usage: flush files from a folder except a number equal to argument.

# Check if scripts-config.sh is imported.

if [ -z $scripts_utils ] ; then

    echo "Import of scripts-utils.sh required."

    exit 1

fi

check_arguments $# 2

backups_number=`ls | wc -l`

let "number_of_backups_to_delete = backups_number - $1"

if [ $number_of_backups_to_delete -gt 0 ] ; then

    ls | head -$number_of_backups_to_delete | xargs rm

else

    dir=`pwd`

    echo "There are not enough files in $dir to Flush it. Check if backup script works fine." | mail -s "[db] $dir has a backup problem" $2

fi

</code>

</pre>

h2. flush-full-databases-backups.sh

<pre>

<code class="php">

#!/bin/sh

. scripts-config.sh

# ARGS: Drupal version

cd $dir_full_backup/$1

for dir in `ls` ; do

    cd $dir

    flush-files.sh $db_full_backup_number $email_multi_assos

done

</code>

</pre>

h2. flush-individual-databases-backups.sh

<pre>

<code class="php">

#!/bin/sh

. scripts-config.sh

# ARGS: manual or auto, Drupal version

cd $dir_individual_backup/$1/$2

for dir in `ls` ; do

    cd $dir

    if [ $1 = 'auto' ] ; then

        flush-files.sh $db_individual_auto_backup_number $email_multi_assos

    else

        flush-files.sh $db_individual_manual_backup_number $email_multi_assos

    fi

done

</code>

</pre>

h2. scripts-config-site.sh

<pre>

<code class="php">

#!/bin/sh

# Sets useful variables of a site.

# ARGS: site_name

# Requires scripts-config.sh

# Check if scripts-config.sh is imported.

if [ -z $scripts_config ] ; then

    echo "Import of scripts-config.sh required."

    exit 1

fi

if [ -z $1 ] ; then

    echo "This script needs a site name as argument."

    exit 1

fi

scripts_config_site='imported'

d7_site_name=$1

d7_site_dir="$d7_dir_sites/assos.centrale-marseille.fr.$d7_site_name"

d7_site_settings="$d7_site_dir/settings.php"

</code>

</pre>

h2. scripts-config.sh

<pre>

<code class="php">

#!/bin/sh

PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/games:/usr/local/sbin:/usr/local/bin:/users/guest/assos/bin

PATH=$PATH:/usr/guest/assos/bin

scripts_config='imported'

email_multi_assos="assos@centrale-marseille.fr"

dir_multi_assos='/users/guest/assos'

dir_scripts="$dir_multi_assos/bin"

dir_template="$dir_multi_assos/Desktop"

###### Database

db_server="myassos.serv.int"

db_user="assos"

dir_log="$dir_multi_assos/log"

###### Backup

db_full_backup_number=3

db_individual_manual_backup_number=3

db_individual_auto_backup_number=3

dir_backup="$dir_multi_assos/backup"

dir_full_backup="$dir_backup/full"

dir_individual_backup="$dir_backup/individual"

dir_individual_manual_backup="$dir_individual_backup/manual"

dir_individual_auto_backup="$dir_individual_backup/auto"

###### D7 variables

d7_dir="$dir_multi_assos/htmltest"

d7_dir_sites="$d7_dir/sites"

### Log

d7_dir_log="$dir_log/d7"

### Backup

d7_dir_full_backup="$dir_full_backup/d7"

d7_dir_individual_manual_backup="$dir_individual_manual_backup/d7"

d7_dir_individual_auto_backup="$dir_individual_auto_backup/d7"

### Template

d7_settings_template_name="settings-D7-bddinde-template.php"

d7_settings_template="$dir_template/$d7_settings_template_name"

###### D6 variables

d6_dir="$dir_multi_assos/html"

d6_dir_sites="$d6_dir/sites"

### Backup

d6_dir_full_backup="$dir_full_backup/d6"

d6_dir_individual_manual_backup="$dir_individual_manual_backup/d6"

d6_dir_individual_auto_backup="$dir_individual_auto_backup/d6"

</code>

</pre>

h2. scripts-utils.sh

<pre>

<code class="php">

#!/bin/sh

# This script contains useful functions for other scripts.

# Check if scripts-config.sh is imported.

if [ -z $scripts_config ] ; then

    echo "Import of scripts-config.sh required."

    exit 1

fi

scripts_utils='imported'

ask_password() {

    # read -s doesn't work with sh.

    # usage: pass=`ask_password "password please:"`

    echo $1 >&2

    echo -n ">" >&2

    stty_avant=`stty -g`

    stty -echo

    read p

    stty $stty_avant

    echo "$p"

    unset p

}

ask_password_db() {

    # ARGS: server_name, user_name

    local db_password="pour_boucler"

    # empty db request to validate password

    while ! mysql -h $1 -u $2 -p$db_password -e "" 2>/dev/null ; do

        db_password=`ask_password "database password:"`

        echo ""

    done

}

generate_password(){

    # ARGS: [password_length]

    # The password contains special characters. '/' must be excluded to avoid sed malfunction.

    local site_password='/'

    if [ -z $1 ] ; then

        local password_length=20

    else

        local password_length=$1

    fi

    while echo "$site_password" | grep -Fq '/' ; do

        site_password=`dd if=/dev/urandom count=1 | uuencode -m - | head -n 2 | tail -n 1 | cut -c-$password_length`

    done

    echo $site_password

}

count_d7_sites(){

    find $d7_dir_sites -type d ! -name all -maxdepth 1 | wc -l

}

check_arguments() {

    # ARGS: number of arguments passed to script, number of arguments required

    if [ $1 -le $2  ] ; then

        echo "Number of arguments insuffisant."

        exit 1

    fi

}

</code>

</pre>