Linux下date常用格式化输出

date "+%Y-%m-%d"
--date "+%H:%M:%S"
::date "+%Y-%m-%d %H:%M:%S"
-- ::date "+%Y_%m_%d %H:%M:%S"
2013_02_19 ::date -d today
Tue Feb  :: CST date -d now
Tue Feb  :: CST date -d tomorrow
Wed Feb  :: CST date -d yesterday
Mon Feb  :: CST