AIX中使用Shell脚本进行备份

介绍一个用Shell脚本在AIX系统中进行数据备份的方法，脚本通过压缩来节约存储空间，同时支持多个数据目录的备份。

#!/bin/ksh
set +x   # 开始执行备份
m_backup_dir="/backup"
m_backup_data_dir="/usr,/home"
m_backup_zip="yes"
m_tar="tar"
m_zip="gzip"
m_tar_arg="czvf"
m_zip_arg="--quiet --force"
m_day=`date +%Y%m%d`
m_hostname=`hostname -s`
m_filename="${m_hostname}-backup.${m_day}.tar"
cd $m_backup_dir || { echo "cannot change to directory $m_backup_dir"; exit 1; }
echo "Backup started at `date`..." >> $m_filename.out
for m_dir in `echo $m_backup_data_dir | awk -F"," '{for(i=1;i<=NF;i++)print $i;}'`
do
  if [ ! -d $m_dir ]
  then
    echo "'$m_dir' is invalid directory" >> $m_filename.out
    continue
  fi
  echo "Backing up '$m_dir' directory..." >> $m_filename.out
  if [ "$m_backup_zip" = "yes" ]
  then
    $m_tar $m_tar_arg - $m_dir | $m_zip $m_zip_arg > $m_filename.$m_day.$m_zip &
  else
    $m_tar $m_tar_arg $m_filename.$m_day.tar $m_dir >> $m_filename.out &
  fi
done
wait

echo "Backup completed at `date`." >> $m_filename.out
exit 0

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