PT Ubuntu Blog

1.uptime命令
输出:16:11:40 up 59 days, 4:21, 2 users, load average: 0.00, 0.01, 0.00

2.查看/proc/uptime文件计算系统启动时间
cat /proc/uptime
输出: 5113396.94 575949.85
第一数字即是系统已运行的时间5113396.94 秒，运用系统工具date即可算出系统启动时间

代码: 全选

date -d "$(awk -F. '{print $1}' /proc/uptime) second ago" +"%Y-%m-%d %H:%M:%S"

输出: 2008-11-09 11:50:31

3.查看/proc/uptime文件计算系统运行时间

代码: 全选

cat /proc/uptime| awk -F. '{run_days=$1 / 86400;run_hour=($1 % 86400)/3600;run_minute=($1 % 3600)/60;run_second=$1 % 60;printf("系统已运行：%d天%d时%d分%d秒",run_days,run_hour,run_minute,run_second)}'

输出:系统已运行：59天4时13分9秒

 不用命令，该从那个文件里查看系统启动时间呢

转自：http://bbs.freesinno.com/viewtopic.php?t=66

Linux, linux命令

修改modprobe.d/aliases

chtsamba:/home# vi /etc/modprobe.d/aliases
# alias net-pf-10 ipv6
alias net-pf-10 off
alias ipv6 off
不会再出现ipv6了.
Proto Recv-Q Send-Q Local Address           Foreign Address         State
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN
tcp        0      0 192.168.0.200:22        192.168.0.123:1869      ESTABLISHED

ipv6, Linux

相信很多人都在使用BB.但是很多程序员都想能够自己开发一些自己实用的软件.但是你有了这些开发的需要.那么你要从何下手呢.那么下面这些内容可以引入你开发.让你少走弯路.可以节约很多的时间去认真去研究开发.

如果你很需要的话可以进入去看看.这些会对你有帮助的.

黑莓开发学习（入门教程）01-前言

 黑莓开发学习（入门教程）02-开发环境搭建

黑莓开发学习（入门教程）03-经典的HelloWorld程序

黑莓开发学习（入门教程）04-标准界面的HelloWorld程序

黑莓开发学习（入门教程）05-再说开发环境和入门阶段的一些问题

bb, blackberry

ext2, ext3, Linux, mkfs

The year is 1999. Bill Clinton is the President of the United States, gas is 94 cents a gallon, Bondi Blue iMacs are a staple in dorm rooms across the country, and Microsoft is trying to bring the desktop Windows experience to the pocket, pushing its Palm-size PC concept (after Palm had quashed the original “Palm PC” branding) on a world still feeling jilted by the failures of the Apple Newton. 3Com subsidiary Palm and its heavyweight licensee Handspring have figured out something interesting about the still-nascent PDA market, though: people like simplicity. If an electronic organizer does what it says it’s going to do, keeps your information in sync with your PC, runs for forever and a day on a single set of batteries, and does it all with a minimum of fuss, people will buy. It’s an exciting, challenging, and rapidly-changing era in the mobile business.

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bb, blackberry

apache, apache2