The company's recent server testing, the need to constantly adjust the system time, one or two is ok half, a little more points, on a variety of entanglements, the author of these several sets of the author is going crazy. Eldest brother: All speed up 3 minutes ... And then they all slow down for 5 minutes. Then we work, all kinds of date 01021511 ... you know. So in order to liberate the productive forces--the code is as follows:
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#!/bin/bash
# Author:mos
# Script Name:etime.sh
# Date & time:2013-01-02/21:47:58
# version:1.0.1
# Description:
#
#ntpserver
tip= ' time.nist.gov '
# Sync now system time, yes: $3= '-U ' no: $ is none.
if [[' $ ' = '-u ']];then
Tcmd= '/usr/bin/rdate '
[!-X $Tcmd] && echo ' rdate not install!! ' && exit 1
"$Tcmd"-S "$Tip"
Fi
# MODF
if [[-N "$" && "$ = = '-' | | "$" = = ' + ']];then
Func=$1
[["$" = "s"]] && num=$2 | | num=$ (($2*60))
Ntime= ' Date +%s '
ltime=$ (($Ntime $func$num))
#Date = '/bin/date-d @ ' $Ltime ' 2>/dev/null '
#echo $Ltime
res= ' date-d ' 1970-01-01 UTC $Ltime seconds ' +%m%d%h%m%y.%s '
Date
Date $Res
Else
Echo ' First,input + or-; Second,input a number. '
Exit 2
Fi
The author has uploaded to the attachment, after downloading, first give a execute permission, then put to the system path:
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[ROOT@VPN1 scripts]# ls
Casetup.sh etime.sh
[ROOT@VPN1 scripts]# chmod +x etime.sh
[ROOT@VPN1 scripts]# MV Etime.sh/bin/etime
The usage format is as follows:
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command [+|-] number [option]
I write the urgent, the code is not refined, careful use: For example, time synchronization failed to deal with, number location of the strict restrictions, etc., the use of the following example:
1. Sync with Time server (time.nist.gov) -U, code line nineth, you can modify the specified time server according to your location; If your rdate command is not installed to (/usr/bin/rdate), the script will automatically exit
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[ROOT@VPN1 scripts]# Date
Thu 3 00:13:25 CST 2013
[ROOT@VPN1 scripts]# etime + 0-u
Wed 2 16:13:29 CST 2013 #第一行输出为当前时间, when the-u parameter is used, the time update order is sorted before the modification time
Wed 2 16:13:29 CST 2013 #第二行输出为修改为时间
[ROOT@VPN1 scripts]# grep-n "time.nist.gov"/bin/etime
9:tip= ' time.nist.gov '
2. Take the current system time , adjust the speed 10 minutes, by default in minutes
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[ROOT@VPN1 scripts]# etime + 10
Wed 2 16:24:47 CST 2013
Wed 2 16:34:47 CST 2013
3. The current system time is subject to, slow down for 20 minutes, in seconds
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[ROOT@VPN1 scripts]# Etime-600-s
Wed 2 16:36:27 CST 2013
Wed 2 16:26:27 CST 2013
4. Taking the current world time as the subject, speed 50 minutes, only in minutes
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[ROOT@VPN1 scripts]# etime + 50-u
Wed 2 16:28:25 CST 2013
Wed 2 17:18:25 CST 2013
Two additional time servers that are temporarily available:
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Time.nist.gov
Rdate.darkorb.net
Time-b.nist.gov
Ntp.openxid.com
It's not easy to write, feel good, give a praise (^-^).
