我租用了一台Plesk 11的专用服务器,我安排了一个数据库备份cron-job来执行每日备份,以下是命令:
mysqldump -u admin -p`cat /etc/psa/.psa.shadow` database1 > /var/backups/db_backup_`date +\%Y\%m\%d\%H\%M\%S`.sql
执行该命令时,我收到一条错误通知:
cat: /etc/psa/.psa.shadow: No such file or directory
-: date: command not found
-: date: command not found
-:
我想创建一种带有多个闹钟(计时)的闹钟,它可以计算时间,并在不同的计时时通知我:
private List<SomeTime> timings; //can also be just the seconds to count
public void run() {
while(counting) {
//if any of the timings is reached do something
for (SomeTime time : timings) {
if(time.equals(System.getTime(