linux sync folders

加详细 -u 加上该选项后，如果DEST中的文件比SRC新，则不同步 -z 传输时压缩rsync Synchronous SSH tunnel mode演示远程同步，需要两台机器一台 192.168.1.110 （源机器）一台 192.168.1.109 （远程机器）# rsync -avPz 111/ 192.168.1.109:/tmp/111/ （把本地111目录下的文件同步到远程机器上111目录）# rsync -avPz 192.168.1.109:/tmp/111/ ./111 现在删除源机器上的111，想从远程机器上同步到源机器完整的写法：# rsync -avPz 111/ [emailprotected]:/tmp/111/ # rsync -avPz [emailprotected]:/tmp/111/ ./111 用户名@在这里可以省略，因为它可以自动识别当前终端的用户，如果是当前登录的是root用户就是root用户，如果是当前登录的是user1那就是user1指定端口同步（遇到对方端口不是22的情况）# rsyn

Tags: Local installation country Write ALS one task/dev/null ShanghaiThere are two Linux times. One is the system time, one is the hardware time!When synchronizing national time, there will be an error: No server suitable for synchronization foundNow the state authorized 210.72.145.44 is temporarily unable to useThis article is mainly about Ntpdate:Installation of NTP yum install ntp-ySecond, change the time zoneCp-y/usr/share/zoneinfo/asia/shanghai/e

server Set up scheduled tasks that are synchronized once per hour: vi/etc/cron.hourly/ntpdatehourly.sh Add the following content: #!/bin/sh Ntpdate 192.168.1.100 Stop NTPD Services: Service NTPD stop Manual synchronization time, performed on each node: ntpdate 192.168.1.100 To set up an interval at any time on the basis of synchronization method: Vi/etc/cront

There are 2 of times in Linux: Hardware time System time These 2 times are not synchronous! If one day you find the system time is wrong, you can look at these 2 times. Hardware time written in the BIOS, the system time is the computer display time.sudo Hwclock-r2014 December 31 Wednesday 08:46 37 seconds -0.214486 secondsThis displays the time of the hardware.You can write time to the BIOS after you use Ntpdate to synchronize net

Samba allows linux to read files in the windows shared folder. first, a software directory is shared on a Windows machine and the access permission of the directory is set. The IP address of the local Windows machine is 192.168.10.58, and then runs the following command on linux: mount-tsmbfs n, the Linux code, reads files in the windows shared folder through sa

: c9 root @ centos1The key's randomart image is:+ -- [RSA 2048] ---- +|||. ||. O ||. O. S ||. O... || O... + o. || ++. O +... || OE =... o... |+ ----------------- +[Root @ centos1 unison-2.40.63] # scp ~ /. Ssh/id_rsa.pub 2.2.2.135:/root/. ssh/authorized_keys[Root @ centos1 unison-2.40.63] # ssh 2.2.2.135Last login: Tue Dec 17 13:26:06 2013 from centos1[Root @ centos ~] # 4) Server 1 and 2 file synchronization[Root @ centos1 bin] # unison/home ssh: // root@2.2.2.145:/home -- file

Spin lock and Mutex function, the only one by one points is different is the mutex block after sleep out of the CPU, and the spin lock will notgive up the CPU, will be busy waiting until the lock!!!Spin lock in the user state use less, in the kernel used more! Spin Lock usage Scenario: Lock holding time is relatively short, or less than 2 times the context switch.Spin lock in the user-state function interface and mutex, the Pthread_mutex_xxx () in the mutex replaced spin, such as: Pthread_spin_i

Linux synchronization time, at least two ways: rdate,ntpdate two kinds ofFirst detect if the system is installed with these two commandsRpm-qa |grep RdateRpm-qa |grep NtpdateIf you install something, you can use Yum-y install Rdate/ntpdateRdateFeature Description: Displays the date and time of the other host.syntax:rdate [-ps][host name or IP address ...]Additional instructions: execute the rdate instruction, ask the other host for the system time and

July 26, 2014 kernel preemption and kernel control path designA definition of kernel preemption: If a process is executing kernel functions in the kernel state, a kernel switchover is allowed (that is, the process being replaced is the process in which the kernel function resides), and the kernel is preempted.The Linux kernel provides the ability to turn on and off kernel preemption, and the kernel cannot preempt when the Current_thread_info preempt_c

directory# MV/OPT/TEST1/TEST2123/SOFT/OPT/TEST1/TEST2123/ABC3. Use the MV command to cut folders and filesCut the folders and files under the/opt/test1/test2123/photo/to the/OPT/TEST1/TEST2123/ABC directory# mv/opt/test1/test2123/photo/*/OPT/TEST1/TEST2123/ABCIv. Directory renamingUnder Linux, moving files and renaming is the same command, MV (meaning of Move)Co

/WWWROOT/SINOZZZ123/ABC 2. Use the MV command to cut the folder. Cut the/home/wwwroot/sinozzz123/soft folder into the/HOME/WWWROOT/SINOZZZ123/ABC directory # MV/HOME/WWWROOT/SINOZZZ123/SOFT/HOME/WWWROOT/SINOZZZ123/ABC 3. Use the MV command to cut folders and files Cut the folders and files under the/home/wwwroot/sinozzz123/photo/to the/HOME/WWWROOT/SINOZZZ123/ABC directory # mv/home/wwwroot/sinozzz123/photo

How Linux servers remove garbled files and foldershome page into the folder where garbled filesBecause of the general trend of PHP, there are more and more opportunities to access Linux servers. Unlike Windows servers, Linux servers only support characters such as numbers, English, etc., and do not recognize the Chinese character. So that caused us to pack the up

Create, copy, cut, rename, clear, and delete folders in linux There is the wwwroot directory under the home directory, and the sinozzz directory under the wwwroot directory, that is,/home/wwwroot/sinozzz I. Create a directory Create a folder named sinozzz123 in the/home/wwwroot directory. Mkdir/home/wwwroot/sinozzz123 Ii. Directory Replication 1. Copy files and folders