time setting

windows:

md %date:~0,10%        ----2007-10-20
md %date:~0,4%%date:~5,2%%date:~8,2%     ----20071020

md %date:~2,2%%date:~5,2%%date:~8,2%     ----091211
md %date:~0,4%%date:~5,2%%date:~8,2%%time:~0,2%%time:~3,2%     ---200710201453

 

F:\>echo %date:~0,10% %time:~0,2%:%time:~3,2%:%time:~6,2%
2009-05-28 21:32:54

 

echo %date:~0,10% %time:~0,2%:%time:~3,2%:%time:~6,2%
2009-05-28_21:32:54

 

echo %date:~0,10%_%time:~0,2%

2009-05-28_21

linux:

echo $(date "+%Y-%m-%d %H:%M:%S")

2009-05-28 21:32:54

 

echo $(date +%Y-%m-%d_%H)

2009-05-28_21

mkdir $(date +%y%m%d).tgz          ---071020.tgz

 

mkdir $(date +%y_%m_%d-%H:%M:%S").tgz       ----07_10_20-15:20:39.tgz

 

echo echo $(date +%Y-%m-%d --date='5 days ago') --- Five days earlier than the current system time

2009-05-23

 

freebsd:

#!/bin/sh
day=$(date -v -5d +"%y%m%d")
echo $day

 

091117 //Current time 091122, take the first 5 days of the current time

 

#!/bin/sh
day=$(date -v -5d +"%Y%m%d")
echo $day

 

20091117 ////The current time is 091122, take the first 5 days of the current time

 

++++++++++++++++++++++++++++++++++++++++++++++

1. Display the date of the previous day of the current day:

#date (current time)

Tue Mar 02, 2010 12:02:17 CST

#date -d "yesterday" (yesterday's time)

Mon Mar 01, 2010 11:52:46 CST

#date -d "1 day ago" (yesterday's time)

Mon Mar 01, 2010 12:06:24 CST

#date --date="1 day ago" (yesterday's time)

Mon Mar 01, 2010 12:08:18 CST

#date -d '1 month ago" (one month ago)

Tue Feb 2, 2010 12:09:16 CST

#date -d '1 year ago"

Mon Mar 02, 2009 12:10:04 CST

#date -d '1 year' (one year later)

Mon Mar 02, 2009 12:10:04 CST