!/bin/bash

echo "Programa de backup full"

Autor: Rogerio Sampaio

Programa de criação de backup full e incremental

DATA: 04/02/2016

echo " "

dados() {

SRCDIR="/backup" #diretórios que serão feito backup
DSTDIR=/mnt/extra #diretório de destino do backup
DATA=date +%x-%k%M%S #pega data atual
TIME_BKCP=+15 #número de dias em que será deletado o arquivo de backup
DOW=date +%a # Day of the week e.g. Mon
DOM=date +%d # Date of the Month e.g. 27
DM=date +%d%b # Date and Month e.g. 27Sep

criar o arquivo full-data.tar no diretório de destino

ARQ=$DSTDIR/full-$DATA.tar.gz

data de inicio backup

DATAIN=date +%c
echo "Data de inicio: $DATAIN"

}

backup() {
sync

Monthly full backup

if [ $DOM = "01" ]; then
NEWER=""
tar $NEWER -czf $ARQ $SRCDIR

elif [ $? -eq 0 ] ; then
echo "----------------------------------------" >> /var/log/backup_full.log
echo "Backup Full concluído com Sucesso" >> /var/log/backup_full.log
DATAFIN=date +%c >> /var/log/backup_full.log
echo "Data de termino: $DATAFIN" >> /var/log/backup_full.log
echo "Backup realizado com sucesso" >> /var/log/backup_full.log
echo "Criado pelo usuário: $USER" >> /var/log/backup_full.log
echo "INICIO: $DATAIN" >> /var/log/backup_full.log
echo "FIM: $DATAFIN" >> /var/log/backup_full.log
echo "-----------------------------------------" >> /var/log/backup_full.log
echo " " >> /var/log/backup_full.log
echo "Log gerado em /var/log/backup_full.log" >> /var/log/backup_full.log

else
echo "ERRO! Backup do dia $DATAIN" >> /var/log/backup_full.log
fi

Weekly full backup

if [ $DOM != "01" ]; then
if [ $DOW = "Dom" ]; then
NEWER=""
NOW=date +%d-%b

    # Update full backup date
    echo $NOW > $TIMEDIR/$COMPUTER-full-date
    tar $NEWER -czf $ARQ $SRCDIR

elif [ $? -eq 0 ] ; then
echo "----------------------------------------" >> /var/log/backup_full.log
echo "Backup Full concluído com Sucesso" >> /var/log/backup_full.log
DATAFIN=date +%c >> /var/log/backup_full.log
echo "Data de termino: $DATAFIN" >> /var/log/backup_full.log
echo "Backup realizado com sucesso" >> /var/log/backup_full.log
echo "Criado pelo usuário: $USER" >> /var/log/backup_full.log
echo "INICIO: $DATAIN" >> /var/log/backup_full.log
echo "FIM: $DATAFIN" >> /var/log/backup_full.log
echo "-----------------------------------------" >> /var/log/backup_full.log
echo " " >> /var/log/backup_full.log
echo "Log gerado em /var/log/backup_full.log" >> /var/log/backup_full.log

else
echo "ERRO! Backup do dia $DATAIN" >> /var/log/backup_full.log
fi
fi

Make incremental backup - overwrite last weeks

if [ $DOM != "01" ]; then
if [ $DOW != "Dom" ]; then
NEWER=""
NOW=date +%d-%b

    # Get date of last full backup
    NEWER="--newer `cat $TIMEDIR/$COMPUTER-full-date`"
    tar $NEWER -cf $BACKUPDIR/$COMPUTER-$DOW.tar $DIRECTORIES
find $SRCDIR -type f -cmin $TIME_FIND -exec tar -rvf $ARQ {} ";"

elif [ $? -eq 0 ] ; then
echo "----------------------------------------" >> /var/log/backup_full.log
echo "Backup Full concluído com Sucesso" >> /var/log/backup_full.log
DATAFIN=date +%c >> /var/log/backup_full.log
echo "Data de termino: $DATAFIN" >> /var/log/backup_full.log
echo "Backup realizado com sucesso" >> /var/log/backup_full.log
echo "Criado pelo usuário: $USER" >> /var/log/backup_full.log
echo "INICIO: $DATAIN" >> /var/log/backup_full.log
echo "FIM: $DATAFIN" >> /var/log/backup_full.log
echo "-----------------------------------------" >> /var/log/backup_full.log
echo " " >> /var/log/backup_full.log
echo "Log gerado em /var/log/backup_full.log" >> /var/log/backup_full.log

else
echo "ERRO! Backup do dia $DATAIN" >> /var/log/backup_full.log
fi
fi
}

procuraedestroifull(){

apagando arquivos mais antigos (a mais de 32 dias que existe)

find $DSTDIR -name "f*" -ctime $TIME_BKCP -exec rm -f {} ";"
if [ $? -eq 0 ] ; then
echo "Arquivo de backup mais antigo eliminado com sucesso!"
else
echo "Erro durante a busca e destruição do backup antigo!"
fi
}

dados
backup
procuraedestroifull

exit 0