Use of TIME commands (date, clock)

Clock displays the time of the hardware

Displays the current time of the hardware

Clock

[Email protected] ~]# clock
Sun Jul 04:54:23 PM CST-0.376669 seconds

Clock-s--hctosys calibration of system time with hardware clock

[[Email protected] ~]# date 051912121995.30
Fri 12:12:30 CST 1995
[[Email protected] ~]# Date
Fri 12:12:35 CST 1995
[Email protected] ~]# clock-s
[[Email protected] ~]# Date
Sun Jul 13:11:30 CST 2016
[Email protected] ~]# clock
Sun Jul 01:11:52 PM CST-1.036958 seconds

Clock-w--SYSTOHC hardware time is corrected with the system clock

[Email protected] ~]# clock
Sun Jul 01:11:52 PM CST-1.036958 seconds
[[Email protected] ~]# date 072416532016.50
Sun Jul 16:53:50 CST 2016
[[Email protected] ~]# Date
Sun Jul 16:53:54 CST 2016
[Email protected] ~]# clock-w
[[Email protected] ~]# Date
Sun Jul 16:54:13 CST 2016
[Email protected] ~]# clock
Sun Jul 04:54:23 PM CST-0.376669 seconds

Displays the current time of the system

Date

[[Email protected] ~]# Date
Sun Jul 17:03:00 CST 2016

Format used by date

Date MMDDHHMMYYYY.SS (Month day hour time minute minute year second seconds)

[[Email protected] ~]# date 072416532016.50
Sun Jul 16:53:50 CST 2016

Displays the current date, in UTC (That is, the zero zone), time

Date-u

[Email protected] ~]# Date-u
Sun Jul 09:04:30 UTC 2016

Displays the current month day

Date +%y-%m-%d

[Email protected] ~]# date +%y-%m-%d
2016-07-24

Displays the number of seconds from 1970 to present

Date +%s

[Email protected] ~]# date +%s
1469351535

Show yesterday's date

Date-d "-1 day"

Date-d "Last Day"

[[email protected] ~]# date-d "-1 day"
Sat Jul 17:15:35 CST 2016
[[email protected] ~]# date-d "Last Day"
Sat Jul 17:15:59 CST 2016

Show tomorrow's date

Date-d "-1 day Ago"

Date-d "+1 Day"

Date-d "1 Day"

[[email protected] ~]# date-d "-1 day Ago"
Mon Jul 17:14:19 CST 2016
[[email protected] ~]# date-d "1 day"
Mon Jul 17:14:36 CST 2016
[[email protected] ~]# date-d "+1 Day"
Mon Jul 17:14:49 CST 2016

Date displayed after 20 days

Date-d "Day"

[Email protected] ~]# date-d "
Sat 17:16:47 CST 2016
[Email protected] ~]# date-d "20day"
Sat 17:18:00 CST 2016

Show dates for the first 10 days

Date-d " -10 Day"

[[email protected] ~]# date-d " -10 Day"
Thu Jul 17:17:18 CST 2016

[Email protected] ~]# date-d " -10day"
Thu Jul 17:18:47 CST 2016

Use of TIME commands (date, clock)