Esse script altera a quota do usuário no banco, recalcula a utilização e atualiza o banco Quota.

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#!/bin/sh
#
###############################################################################
#  Script UPDATE_QUOTA.SH v1.0                                                       #
#                                                                             #
#  Autor: Alessandro Dias                                                     #
###############################################################################
#                                                                             #
#  Programa atualizado para trabalhar com SGBD Mysql e uma cota por usuário.  #
#                                                                             #
###############################################################################
#    Este programa calcula o tamanho dos emails recebidos (Entrada + Pastas), #
# e atualiza o uso da quota no banco mysql.                                   #
#    Nao precisa de nenhum pacote adicional, como ldap, mysql, postgre, etc.  #
#    Para instalacao basta alterar as permissoes deste arquivo, e colocalo na #
# pasta /etc/cron.daily para a execucao diaria do script.                     #
#    Alem disso vc deve alterar as variaveis para adaptar ao seu sistema      #
###############################################################################
#
BASEDIR=/var/mail
MYHOSTNAME="venus.rjo.ccom.eb.mil.br"
MYDOMAIN="rjo.ccom.eb.mil.br"
TODOS=`cat /etc/passwd | cut -d : -f 1`
clear
echo "*********************************************************************************************"
echo "*                                 Programa UPDATE_QUOTA.SH 1.0                              *"
echo "*********************************************************************************************"
echo "Autor: Alessandro Dias"
echo "---------------------------------------------------------------------------------------------"
echo "Dados do Usuario: "

  USERNAME=$1 # inicializa USERNAME
if [ "$USERNAME" != "" -a "$2" != "" ]; then
      GRUPO=`groups $USERNAME |cut -d " " -f 3`
      #QUOTA - Tamanho em Bytes (100MBytes)
      QUOTA_MB=$2 
      MAILQUOTA=`expr $QUOTA_MB \* 1000000`
      MBOX=`du -ab $BASEDIR/$USERNAME 2>/dev/null | cut -f 1`
      HOME=`du -b /home/$USERNAME/mail | cut -f 1`
      TAMATUAL=`expr $MBOX \+ $HOME`
      TAMATUAL_TMP=`expr $TAMATUAL \* 100`
      MBOX_TMP=`expr $MBOX \* 100`
      HOME_TMP=`expr $HOME \* 100`
      USO_MBOX=`expr $MBOX_TMP / $MAILQUOTA`
      USO_HOME=`expr $HOME_TMP / $MAILQUOTA`
      USO=`expr $TAMATUAL_TMP / $MAILQUOTA`
      echo "U:$USERNAME G:$GRUPO Q:$QUOTA_MB T:(mbox=$MBOX + home=$HOME) = $TAMATUAL U:(mbox=$USO_MBOX% + home=$USO_HOME%) = $USO%"
      # Atualiza a utulização da mbox
      mysql -u root -ppostfix -e "update user_quota set quota=$QUOTA_MB where usuario='$USERNAME'" quota
      mysql -u root -ppostfix -e "update user_quota set uso=$USO where usuario='$USERNAME'" quota
          # Gera uma Msg de Alteração!
          #Wed, 6 Apr 2005 11:48:47 -0000 (UTC)
          #Convertendo data para ingles
          DIA=`date +%a`
          case $DIA in
          Seg) DIA="Mon" ;; 
          Ter) DIA="Tue" ;; 
          Qua) DIA="Wed" ;; 
          Qui) DIA="Thu" ;; 
          Sex) DIA="Fri" ;; 
          Sab) DIA="Sat" ;; 
          Dom) DIA="Sun" ;; 
          esac
          MES=`date +%b`
          case $MES in
          Abr) MES="Apr" ;; 
          Mai) MES="May" ;; 
          Ago) MES="Aug" ;; 
          Set) MES="Sep" ;; 
          Out) MES="Oct" ;; 
          esac
      DATA_HJ_TMP=`date`
      DATA_HJ=`echo $DATA_HJ_TMP | cut -d " " -f 1,2,3,4,6`
      echo -e "\nFrom postmaster@$MYDOMAIN  $DATA_HJ\nReturn-Path: <postmaster@$MYHOSTNAME>\nX-Original-To: postmaster\nDelivered-To: postmaster@$MYDOMAIN\nReceived: by $MYHOSTNAME (Postfix, userid 0)\nFrom: \"POSTMASTER\" <postmaster@$MYDOMAIN>\nTo: $USERNAME@$MYDOMAIN\nSubject: Quota Alterada! ($QUOTA_MB MB)\nDate: $DIA, `date +%e` $MES `date +%Y` `date +%T` -0000 (UCT)\n\nAtencao: Sua quota de utilizacao foi alterada pelo administrador para $QUOTA_MB MBytes (Uso=$USO%).\n\n--- Resumo de utilizacao: ---\nTamanho(bytes): ( mbox=$MBOX + pastas=$HOME ) = $TAMATUAL\nPercentual: ( mbox=$USO_MBOX% + pastas=$USO_HOME% ) = $USO%\n\n --------------------------\n Secao de Gerencia de Redes\n 2CTA - Div Op - SGRT\n Contatos (2519-5076/5068)\n" >> $BASEDIR/$USERNAME
else 
  echo -e "\nEntre com a sintaxe correta do comando:\n./quota_user.sh <nome_usuario> <nova_quota>\n" 
fi
echo -e "---------------------------------------------------------------------------------------------\n"

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