linux date 命令
1 [root@root ~]# date "+%Y-%m-%d" 2 2013-02-19 3 [root@root ~]# date "+%H:%M:%S" 4 13:13:59 5 [root@root ~]# date "+%Y-%m-%d %H:%M:%S" 6 2013-02-19 13:14:19 7 [root@root ~]# date "+%Y_%m_%d %H:%M:%S" 8 2013_02_19 13:14:58 9 [root@root ~]# date -d today 10 Tue Feb 19 13:10:38 CST 2013 11 [root@root ~]# date -d now 12 Tue Feb 19 13:10:43 CST 2013 13 [root@root ~]# date -d tomorrow 14 Wed Feb 20 13:11:06 CST 2013 15 [root@root ~]# date -d yesterday 16 Mon Feb 18 13:11:58 CST 2013
参考：http://blog.csdn.net/jk110333/article/details/8590746
