CentOS

1. Block all traffic for the MAC address to the XX:XX:XX:XX:XX:XX host:Iptables-a input-s 192.168.1.21-m mac--mac-source xx:xx:xx:xx:xx:xx-j ACCEPT[!] --mac-source AddressMatch source MAC address. It must be of the form XX:XX:XX:XX:XX:XX. Note that

Need to prepare:1) Virtualbox-5.0.4-102546-win.exe: Https://www.virtualbox.org/wiki/Download_Old_Builds_5_02) Centos-6.7-x86_64-minimal.iso or Centos-6.7-x86_64-bin-dvd1.iso: http://mirrors.sina.cn/centos/6.7/isos/x86_64/Self-installing Virtualbox-5.

The CentOS DNS service builds the 30th sessionThe first half of the classThe second half of the classI. DNS-related principlesDNS is an abbreviation for the domain Name System, which is a service mechanism that translates IP addresses into

Turn on the Redis port and modify the firewall configuration file Vi/etc/sysconfig/iptablesJoin Port Configuration-A rh-firewall-1-input-m state--state new-m tcp-p TCP--dport 6379-j ACCEPT-A rh-firewall-1-input-m state--state new-m tcp-p TCP--dport 6

1. Uninstall the original Open JDKView Installed Packagesgrep JavaIf you already have an open JDK installed, you might be listing something like this:tzdata-java-2015e-1. El6.noarchjava-1.6. 0-openjdk-1.6. 0.35-1.13. 7.1 . El6_6.x86_64java-1.7.

Go to catalogue /etc/sysconfig/network-scriptsVI ifcfg-eno16777736DHCP Dynamic settings　　Just change the last line onboot=no to Omboot=yes, re-save, and restart the Web Services service network restart. You can test with the ping command. (The

To mount a disc first: centos-7-x86_64-dvd-1503-01[Email protected] ~]# mount/dev/cdrom/mnt[[email protected] ~]# yum install cobbler cobbler-web DHCP Tftp-server pykickstart httpd-y[Email protected] ~]#/etc/init.d/httpd restart[[email protected] ~]#

0 System Configuration + software versionHost: Dell Optiplex 390 MT (i5)System + Software: CentOS 6.5 x64, Matlab R2012, R2013System + Software: CentOS 6.7 x64, Matlab R2014There is an issue in which the print function prints incorrectly in both

CD ~ Switch to home directoryCD/TMP Switch to directory tmpcd dir switch to dir directory in current directoryCD/Switch to root directoryCd.. Switch to the previous level directoryCd.. /.. Switch to the top level two directoryCD ~ Switch to User

OpenFire is a good thing. This is very much the case with a limited team size. Of course, you can also develop chat with node. js. There are a few places to watch out for Linux. Because the CentOS 6 I chose is 64-bit, but the OpenFire is 32

#svn安装Yum install-y SubversionUninstall SVN old versionYum remove-y Subversionwget http://pkgs.repoforge.org/subversion/subversion-1.7.4-0.1.el6.rfx.x86_64.rpmInstall new versionRPM-IVH subversion-1.7.4-0.1.el6.rfx.x86_64.rpmCreate the SVN root

When reading and writing files, the Linux kernel caches files in memory for increased read and write efficiency and speed, which is the cache memory.The Cache memory will not be released automatically even after the program has finished running.

Yum Install hdparmParameters:-a Set the number of partitions that are pre-deposited into the chunk when the file is read, and if the option is not added, the current setting is displayed.-a to start or close the cache when the file is read.-C Set

Issue: Redhat 6.4 The default comes with a Yum source that needs to be registered before it can be updated.Solution: Remove the default yum source and manually configure the Yum source for CentOS 6.5.My system here is Redhat 6.4, so in

CentOS 5 CentOS 6 START process and key steps650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/74/00/wKiom1YLxFGQwfI-AACjpunNGng763.jpg "title=" 1.png " alt= "Wkiom1ylxfgqwfi-aacjpunngng763.jpg"/>1 , power-on self-test: When the host power

Official documentation is not detailed operation also a little problem, so the operation is recorded as follows.Operating system Environment:CentOS 5.8Python 2.4.3Create a collector and so on, don't say it here, see Official document:

Source Address "http://chinacheng.iteye.com/blog/1825538"CentOS Install gitAfter downloading the source code, git clone appears "fatal unable to find remote helper for ' https '" error, suspected git installation is not completeInstall using Yum,

1. See if VSFTPRPM-QA is installed | grep vsftpd  If Vsftpd-2.0.5-21.el5 is present, the vsftp   installation vsftp yum-y install vsftpd  2 is already installed. Test Whether the installation is successful (IP to yourself ah, do not use my login for

1. View TCP connection StatusNetstat-nat |awk ' {print $6} ' |sort|uniq-c|sort-rnNetstat-n | awk '/^tcp/{++s[$NF]}; END {for (a in S) print A, s[a]} ' orNetstat-n | awk '/^tcp/{++state[$NF]}; END {for (key in) print key, "\ T", State[key]}

Solve the problem that eth0 cannot be automatically activated when CentOS 6.7 is used to install the VM. VMWare 1, 11.0 CentOS 6.7 minimal Select the Bridge Mode for VMWare Nic Configuration Problem: By default, the ifconfig command only