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In linux, the md5sum command uses the brief md5 algorithm to verify the integrity of network file transmission and prevent file tampering. The message digest algorithm (message-digestalgorithm) generates a 32-bit fingerprint with a hexadecimal

Linux File operation common commands VI interesting commands: 1 replace the command www.2cto. coms -- substitue replacement command to replace the first cici in the current line with titi: s/cici/titi to replace all the cici in the current line with

Centos installation setup tool centos cannot run setup? Installing setuptool can save a lot of system management time. Www.2cto.com # install setuptoolyuminstallsetuptool # you can find that the setup is incomplete, and then install one for system

Ubuntu12.10 system backup and restoration backup: tar-cvpzf/media/backup. tgz -- exclude/proc -- exclude/lost + found -- exclude/mnt -- exclude/sys -- exclude/media/www.2cto. comtar is a backup program c... Ubuntu 12.10 system backup and

Principle of ARP cache aging time in Linux 1. problem www.2cto.com as we all know, ARP is a link layer Address Resolution Protocol, which uses the IP address as the key value to query the MAC address of the host with the IP address. The details of

Basic operations for apache startup, stop, and restart commands in linux: This document assumes that your apahce installation directory is/usr/local/apache2. these methods are suitable for www.2cto in any situation. comapahce startup command:

We all know the bg and fg commands in Linux. on Windows, we either have a program running in the background as a service or stop the service. The program cannot be switched between the foreground and background. Linux provides fg and bg commands,

What if the Ubuntu system crashes? Here are some solutions: www.2cto.com temporarily enables the shortcut key sudosuecho & quot; 1 & quot; & gt;/proc/sys/kernel/sysrq for long-term use and editing/etc/sysctl. conf sets kernel. sysrq... What if the

In Linux, you can view the user list cat/etc/passwd. you can view the list of all users. you can view the list of currently active users. cat/etc/group: You can view the user group www.2cto.com, but there are a lot of results, it looks like you are

Linux Nic configuration file settings 1. configuration file www.2cto.com/etc/hosts (the local host IP address ING can have multiple aliases ). /Etc/services (correspondence between Port numbers and standard services ). /Etc/sysconfig/network (set

Differences between hosts files and network files in Linux there are two configuration files related to computer names in Linux: www.2cto. com1. hosts file, path:/etc/hosts. This article is used on the network to resolve the ing between the computer

The NFS network file server simply assumes that the NFS network file server www.2cto. comNFS is short for the Network File System and is mainly used for sharing between linux and linux. NFS is installed by default in the centos system. it depends on

Centos dual Nic binding technology in the/etc/sysconfig/network-scripts/directory to create a ifcfg-bond0 file, the content of the file is as follows: DEVICEbond0www. 2cto. comuserctlnobootprotononeonbootyesipaddr192.168.100.17netmask2017255. centos

Linux study Note 2 permission management command link: Linux study Note 1 file operation command example... Linux study Note 2 permission management command link: Linux study Note 1 file Operation Command http://www.2cto.com/os/201211/169196.html 1.

Linux Study Notes 3 file search command links: Linux Study Notes 1 file Operation Commands http://www.2cto.com/os/201211/169196.html Linux study Note 2 permission management commands http://www.2cto.com/os/201211/169485.html 1. which, w... Linux

Linux Study Notes 4-compressed and decompressed commands links: Linux Study Notes 1 file Operation Commands http://www.2cto.com/os/201211/169196.html Linux study Note 2 permission management commands http://www.2cto.com/os/201211/169485.html Linux

Centos6.2 use dnsmasq instead of tftp and dhcp server for unattended installation 1 install dnsmasqwww.2cto.com # yuminstalldnsmasq2dnsmasq configuration file vim/etc/dnsmasq. conf [plain] bogus-privfilterwin2kinte... Centos6.2 use dnsmasq to

Warning: conflictingtypesforbuilt-infunction & amp; #39; puts & amp; #39; solution [Compiler Version] arm-linux-gcc3.4.1 [problem description] www.2cto.com in embedded underlying development, I wrote a puts function, that is, sending through the

Check the number of CPUs in Linux. view the number of physical CPUs www.2cto.com # cat/proc/cpuinfo | grep & quot; physicalid & quot; | sort | uniq | wc-l2. view the number of logical CPUs # cat/proc/cpuinfo | grep & quot; processor & quot; | wc-l3.

The preemptible linux process is accompanied by the execution of schedule. The kernel provides a TIF_NEED_RESCHED flag to indicate whether schedule () is used for scheduling once. The preemption can be divided into user preemption and kernel