创建用户 xxxx1，密码 xxxx，创建数据库 xxxx2，赋予xxxx1 在xxxx2 上的所有权限。

#sudo-s-upostgres
$psql
postgres#CREATEUSERxxxx1WITHPASSWORD'xxxx';
postgres#CREATEDATABASExxxx2;
postgres#GRANTALLPRIVILEGESONDATABASExxxx2toxxxx1;

备份

pg_dump -h localhost -U Username dbName  -t tableName > ./gps.bak

恢复

psql -h localhost -U UserName -d dbName< ./Desktop/1.backup

从文或流中导入到数据库（copy from）

FOLDER=20120710_new

for file_a in ${FOLDER}/*; do
  cat $file_a|psql -h localhost -U map -d dev -c "copy gps_histories_all (vehicle_no,longitude,latitude,speed,direction,"time") FROM stdin with delimiter ';';"
done