1.3-date command

Date and time of output

Cal View calendar of the month Cal-y view year-round calendar

Modify the system time date-s "2014-12-30 13:23:23"

Network update time Yum install-y NTP

Ntpdate ntp.fudan.edu.cn uses the time server of Fudan University to proofread time.

Date +%f only prints dates such as: 2014-12-30

Date +%t only print time such as: 13:23:23

Date +%y only prints years such as: 2014

Date +%y only prints two-bit years such as: 14 (years)

Date +%m Print month only: 12 (month)

Date +%d only Print day: 30 (day)

Date +%h only print hours such as: 12 (when)

Date +%m only prints minutes such as: 23 (min)

Date +%s only prints seconds such as: 23 (seconds)

Date +%s printing distance 1970-1-1 0:0:0 How many seconds it's been, it's a time stamp.

Date +%w only prints the day of the Week: 1 (Week 1 Note: Sunday: 0)

Date +%w only prints the first weeks such as: 52 (today is the 52nd week of this year)

Date + "%y-%m-%d%h:%m:%s" to customize the format of dates displayed. There are spaces in the middle, so use quotation marks.

Date-d "-2 Days" +%f show 2 day ago date as: 2014-12-18

Date-d "-2 month" +%f Show dates before February

Date-d "-2 Hour" +%t show 2 hours ago When: 11:23:23

Date-d "-2 min" +%t Show time 2 minutes ago

Date-d "-2 SEC" +%t Show time 2 seconds ago

This command is commonly used in scripts, and system-generated log files are named by date.

1.3-date command