Linux关机命令
1 shutdown:
[NAME
] shutdown - bring the system down
SYNOPSIS
/sbin/shutdown [-t sec] [-arkhncfF] time [warning-message]
DESCRIPTION
shutdown brings the system down in a secure way. All logged-in users are notified that the system is going down, and login(1) is blocked. It is possible to shut the system down immediately or after a specified delay. All processes are first notified that the system is going down by the signal SIGTERM. This gives programs like vi(1) the time to save the file being edited, mail and news processing programs a chance to exit cleanly, etc. shutdown does its job by signalling the init process, asking it to change the runlevel. Runlevel 0 is used to halt the system, runlevel 6 is used to reboot the system, and runlevel 1 is used to put to system into a state where administrative tasks can be performed; this is the
default if neither the -h or -r flag is given to shutdown. To see which actions are taken on halt or reboot see the
appropriate entries for these runlevels in the file /etc/inittab.
OPTIONS
-a Use /etc/shutdown.allow.
-t sec Tell init(8) to wait sec seconds between sending processes the warning and the kill signal, before changing to
another runlevel.
-k Do not really shutdown; only send the warning messages to everybody.
-r Reboot after shutdown.
&n
相关文档:
2009 年 4 月 23 日
本文中我们针对 Linux 上多线程编程的主要特性总结出 5 条经验,用以改善 Linux 多线程编程的习惯和避免其中的开发陷阱。在本文中,我们穿插一些 Windows 的编程用例用以对比 Linux 特性,以加深读者印象。
背景
Linux 平台上的多线程程序开发相对应其他平台(比如 Windows)的多线程 API 有一些细微 ......
简单实例说明待补充,实例源码可在此链接下载http://d.download.csdn.net/down/2389895/sanlinux
jniNative.cpp
#include "jniNative.h"
#include "mymain.h"
#include <stdio.h>
JNIEXPORT void JNICALL Java_HelloWorld_print(JNIEnv *env, jobject arg, jstring instring)
{
&nb ......
tar 文件是几个文件和(或)目录在一个文件中的集合。这是创建备份和归档的佳径。
tar 使用的选项有:
-c — 创建一个新归档。
-f — 当与 -c 选项一起使用时,创建的 tar 文件使用该选项指定的文件名;当与 -x 选项一起使用时,则解除该选项指定的归档。
-t — 显示包括在 tar 文件中的文件列表。
-v ......
文章出处:http://doc.linuxpk.com/52964.html
使用控制台登录后,在shell提示符下面操作时会用到大量的Tab来自动补全,这个时候机器的蜂鸣器就会嘟嘟吡吡不停,这个嘟嘟吡吡的声音可以使用setterm命令来设置它的长短。
setterm -blength 0
  ......
http://blog.csdn.net/linucos/archive/2010/01/22/5223615.aspx
Linux
移植开发
准备工作:
准备
交叉编译工具链:这里我们选择DENX软件工程提供的ELDK交叉编译环境,参考地址:http://ftp.denx.de/pub/eldk/4.2/
,
我们使用其中的一套工具。准备工作步骤如下:
1. 建立工作文件夹NewMsg2410,并建立子目录sources ......