postgres数据库之前没有备份机制，现在加上以防万一。每周末备份1次，只保留最新的3个sql文件
#config begin meta_host="*.*.*.*" mete_user="mete_user" mete_databse="mete_databse" mete_password="mete_password" meta_port="meta_port" back_path="/home/soft/psql/backup/" back_count=3 #config end echo $(date +%Y-%m-%d\ %H:%M:%S)" pg_dump begin" #备份数据库文件 date=$(date +%Y-%m-%d) PGPASSWORD=${mete_password} /opt/PostgreSQL/9.5/bin/pg_dump -U ${mete_user} -d ${mete_databse} > ${back_path}sjck_${date}.sql echo $(date +%Y-%m-%d\ %H:%M:%S)" pg_dump end" #只保留最新的3个文件，删除旧的 c=0 for file in `ls ${back_path}` do filelist[$c]=$file ((c++)) done size=${#filelist[*]} echo "文件数组长度:" ${size} for value in ${filelist[@]} do echo $value done if [ ${size} -gt ${back_count} ] then echo "size>" ${back_count} for ((i=0; i<${size}-${back_count}; i++)) do echo "要删除的过期excel文件夹:" ${filelist[$i]} rm -rf ${back_path}${filelist[$i]} done else echo "size<=" ${back_count} fi echo $(date +%Y-%m-%d\ %H:%M:%S)" task end" 
