Shell to take today, yesterday, day before yesterday's time operation code _linux shell

1. Take today's time

Copy Code code as follows:

$date-D "Now" +%y-%m-%d

2. Take yesterday time

Copy Code code as follows:

$date-D "Yesterday" +%y-%m-%d
$date-D "1 days ago" +%y-%m-%d
# # D,--date=string display time described by STRING, not ' now '
String can be ' now ', ' Yesterday ', ' N days ago '
' N days ago ' means the day before N day

3. Take time the day before yesterday

Copy Code code as follows:

$date-D "2 days Ago" +%y-%m-%d

Effect Display:

Copy Code code as follows:

$ date
Thursday, July 31, 2014 20:48:32 CST
$ date-d "Now" +%y-%m-%d
2014-07-31
$ date-d "Yesterday" +%y-%m-%d
2014-07-30
$ date-d "2 days Ago" +%y-%m-%d
2014-07-29