NOW = $(data + "%Y-%m-%d-%H-%M-%S")

DIR = /export/backup

function exportData(){

exportCmd = "/export/mongodb/bin/mongodump"

$exportCmd -h 127.0.0.1 -u "admin" -p "admin" -d test --gzip -o $DIR/test_$NOW

}

echo export data from test //输出提示信息

exportData //调用function