wget com progressbar no kde

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#!/bin/sh
################################################################
# Script Criado por: professordavid@gmail.com                  #
# Email: professordavid@gmail.com                              #
# blog: prof-david.blogspot.com                                #
################################################################
LOG=wget.log
#LINK=http://www.amsn-project.net/amsn_dev.tar.gz
#LINK=http://everaldo.com/crystal/crystal_project.tar.gz
LINK=http://ufpr.dl.sourceforge.net/sourceforge/netdragon/superkaramba-0.39.tar.gz


#rotina pra tratar um erro
erro()
{
   echo "Erro fazendo download do link: $LINK"
   exit 1
}



if [ ! wget -o $LOG $LINK & ]; then
erro
exit;
fi 
porc=`cat wget.log |grep %|cut -c62-64|tail -n 1`

# Prepara a variavel para a barra

kdialog --passivepopup "O arquivo começara a ser baixado em breve..." &
while [ -z $porc ]; do
echo "aguarde... iniciando"
sleep 1
porc=`cat wget.log |grep %|cut -c62-64|tail -n 1`;
done

#Barra valendo.

 bar=`kdialog --progressbar "Baixando arquivo" 100 `

while [ $porc -lt 100 ]; do
sleep 1
echo "Baixando em $porc por cento"
 dcop $bar setProgress $porc
porc=`cat wget.log |grep %|cut -c62-64|tail -n 1`;
done

dcop $bar close
echo "tudo baixado com sucesso"
kdialog --msgbox "tudo ok\n Uffa!! té que enfim :-P "
#killall -9 wget
rm -rf wget.log
exit