Linux-日期时间相关命令

获取当前时间 date

 [root@VM_0_3_centos ~]# date
 Mon Mar 18 19:13:33 CST 2019
 [root@VM_0_3_centos ~]# 

date相关选项；

 [root@VM_0_3_centos ~]# date --help
 Usage: date [OPTION]... [+FORMAT]
   or:  date [-u|--utc|--universal] [MMDDhhmm[[CC]YY][.ss]]
 Display the current time in the given FORMAT, or set the system date.

   -d, --date=STRING         display time described by STRING, not `now'
   -f, --file=DATEFILE       like --date once for each line of DATEFILE
   -r, --reference=FILE      display the last modification time of FILE
   -R, --rfc-2822            output date and time in RFC 2822 format.
                             Example: Mon, 07 Aug 2006 12:34:56 -0600
       --rfc-3339=TIMESPEC   output date and time in RFC 3339 format.
                             TIMESPEC=`date', `seconds', or `ns' for
                             date and time to the indicated precision.
                             Date and time components are separated by
                             a single space: 2006-08-07 12:34:56-06:00
   -s, --set=STRING          set time described by STRING
   -u, --utc, --universal    print or set Coordinated Universal Time
       --help     display this help and exit
       --version  output version information and exit

这是date在Linux系统中部分帮助信息显示的内容。其中%F%T%Y%m%d%H%M%S%s:是我们比较常用的，详细见下图所示

示例

 [root@VM_0_3_centos ~]# date +%Y%m%d%H%M%S
 20190319195335
 [root@VM_0_3_centos ~]#