date(显示软件时钟)
显示当前时间
[root@sre01 ~]# date
Fri Oct 18 16:31:57 CST 2024
显示时区
[root@sre01 ~]# date -R
Fri, 18 Oct 2024 16:31:59 +0800
显示当前时间的时间戳
[root@sre01 ~]# date +%s
1729240329
显示指定时间的时间戳
[root@sre01 ~]# date -d "1990-09-09" +%s
652806000
将时间戳转换为可读的时间
[root@sre01 ~]# date -d @11111111
Sat May 9 22:25:11 CST 1970
按指定格式显示时间
[root@sre01 ~]# date +%F
2024-10-18
[root@sre01 ~]# date +%T
16:34:48
[root@sre01 ~]# date +"%F %T"
2024-10-18 16:35:03
修改时间-s
[root@sre01 ~]# date
Fri Oct 18 16:48:32 CST 2024
[root@sre01 ~]# date -s 23:00
Fri Oct 18 23:00:00 CST 2024
[root@sre01 ~]# date
Fri Oct 18 23:00:03 CST 2024
[root@sre01 ~]# date -s "2024-09-09 22:00"
Mon Sep 9 22:00:00 CST 2024
[root@sre01 ~]# date
Mon Sep 9 22:00:01 CST 2024
clock(显示硬件时钟)
- -s (使用硬件时钟时间,覆盖系统时钟)
- -w(使用系统时钟时间,覆盖硬件时钟)
[root@sre01 ~]# clock
Fri 18 Oct 2024 04:42:22 PM CST -0.099331 seconds
[root@sre01 ~]# clock -s
[root@sre01 ~]# clock -w
timedatectl (配置时区,查看时间同步)
查看时间和时区和同步状态
[root@sre01 ~]# timedatectl
Local time: Fri 2024-10-18 16:44:24 CST
Universal time: Fri 2024-10-18 08:44:24 UTC
RTC time: Fri 2024-10-18 08:44:24
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: no
DST active: n/a
查看时间和时区和同步状态
[root@sre01 ~]# timedatectl status
Local time: Fri 2024-10-18 16:44:27 CST
Universal time: Fri 2024-10-18 08:44:27 UTC
RTC time: Fri 2024-10-18 08:44:27
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: no
DST active: n/a
设置时区
[root@sre01 ~]# timedatectl set-timezone Asia/Shanghai
查看所有支持的时区
[root@sre01 ~]# timedatectl list-timezones
Africa/Abidjan
Africa/Accra
Africa/Addis_Ababa
Africa/Algiers
Africa/Asmara
Africa/Bamako
Africa/Bangui
Africa/Banjul
Africa/Bissau
Africa/Blantyre
Africa/Brazzaville
Africa/Bujumbura
Africa/Cairo
Africa/Casablanca
Africa/Ceuta
Africa/Conakry
Africa/Dakar
cal (查看日历)
[root@sre01 ~]# cal
October 2024
Su Mo Tu We Th Fr Sa
1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30 31
[root@sre01 ~]# cal 1990
1990
January February March
Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa
1 2 3 4 5 6 1 2 3 1 2 3
7 8 9 10 11 12 13 4 5 6 7 8 9 10 4 5 6 7 8 9 10
14 15 16 17 18 19 20 11 12 13 14 15 16 17 11 12 13 14 15 16 17
21 22 23 24 25 26 27 18 19 20 21 22 23 24 18 19 20 21 22 23 24
28 29 30 31 25 26 27 28 25 26 27 28 29 30 31
April May June
Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa
1 2 3 4 5 6 7 1 2 3 4 5 1 2
8 9 10 11 12 13 14 6 7 8 9 10 11 12 3 4 5 6 7 8 9
15 16 17 18 19 20 21 13 14 15 16 17 18 19 10 11 12 13 14 15 16
22 23 24 25 26 27 28 20 21 22 23 24 25 26 17 18 19 20 21 22 23
29 30 27 28 29 30 31 24 25 26 27 28 29 30
July August September
Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa
1 2 3 4 5 6 7 1 2 3 4 1
8 9 10 11 12 13 14 5 6 7 8 9 10 11 2 3 4 5 6 7 8
15 16 17 18 19 20 21 12 13 14 15 16 17 18 9 10 11 12 13 14 15
22 23 24 25 26 27 28 19 20 21 22 23 24 25 16 17 18 19 20 21 22
29 30 31 26 27 28 29 30 31 23 24 25 26 27 28 29
30
October November December
Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa
1 2 3 4 5 6 1 2 3 1
7 8 9 10 11 12 13 4 5 6 7 8 9 10 2 3 4 5 6 7 8
14 15 16 17 18 19 20 11 12 13 14 15 16 17 9 10 11 12 13 14 15
21 22 23 24 25 26 27 18 19 20 21 22 23 24 16 17 18 19 20 21 22
28 29 30 31 25 26 27 28 29 30 23 24 25 26 27 28 29
30 31
[root@sre01 ~]#