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System environment: CentOSLinux network environment: two IP addresses, 192.168.0.10 and 10.10.30.2, with a mask of 255.255.255.0, the gateway locations of the two subnets System environment:CentOS Linux Network environment:Two IP addresses: 192.168

By default, we can view the history command without any execution time. if you want to use the execution time of the record command, you can do this: # Edit/etc/bashrc, add the following content # let the system record the execution time of each

A system-level windows system has two different operating levels: safe and normal. Similarly, linux also has a system-level running level, and the operating level of linux is more flexible, more diversified. Before talking about the running level,

Judgment basis: 1. the cpu with the same coreid is hyper-threading of the same core. 2. a cpu with the same physicalid is a thread or cores encapsulated by the same cpu. Taking HP dlw.g6 as an example: ① number of physical CPUs: [root @ localhost ~]

The company's intranet server does not have enough hard disk space. mount the new GB hard disk and set it to the samba shared directory. for samba, refer to this article. The server already has two hard disks, so the hard disk is Company intranet

Common Method 1 of centos: GRUB: on the boot loader menu, type [e] to enter the editing mode. You will face a list of pilot projects. Find the line with the output similar to the following: kernel/vmlinuz-2.6.18-164.el5roroot =/dev/vol/rootrhgbquite

How to install and uninstall software in Centos yum install yum-yinstallhttpd when multiple similar software is installed in yum-yinstallhttpd * when multiple non-similar software is installed in Centos- yinstallhttpdphpphp-gdmysql how to install

Sohu's open-source Image: http://mirrors.sohu.com/very fast !! Follow these steps: 1. back up and clear/etc/yum. repos. d/CentOS-Base.repoecho "" & gt;/etc/yum. repos. d/CentOS-B Sohu's open source ImagesHttp://mirrors.sohu.com/feel pretty fast good

How to install and upgrade an RPM package? Solution: to install an RPM package, you must have an RPM package for the software you want to install. You can download the appropriate RPM package from a website. of course, the Red Hat Network provides

Convert big5 encoding to utf8. What should I do at this time? Is it hard to convert each file to utf8? This is not required! Use the iconv command! In the terminal environment, you can use the "wget URL" to download the above files! Laruence

1shiftwidth indicates the blank length used for automatic indentation in the program. In general, to keep the program beautiful, it is best to be consistent with the following parameters. It is also the setter of the symbol shift length. 2tabstop

You may have a good understanding of the Linux Load average (loadaverages. The average load value can be seen in the uptime or top command. They may look like this: loadaverage: 0.09, 0.05, 0.01. many people will understand the average load value as

Mysql supports logical backup and physical backup based on backup and recovery methods. logical backup is a backup SQL statement. when the database data is restored, the physical backup is a backup data file, compared to data files under the cp, the

1. install the conversion tool [root @ master/] # yuminstallconvmv2. view the Linux character set [root @ master/] # localeLANG = zh_CN.utf8LC_CTYPE = "zh_CN.utf8" LC_NUMERIC = "zh 1. install the conversion tool [Root @ master/] # yum install convmv

You can use chattr to set the permission to hide an object. Use lsattr to display the hidden permissions of an object. Chattr [+-=] [ASacdistu] [file or directory name] parameter description: +-=: "+" (add), "-" (reduce), "=" (set) attribute A: When

I recently deployed a storage device with 6 TB of space, prepare to partition and format the large-capacity storage. because MBR partitions support a maximum capacity of only 2 TB. if it exceeds 2 TB, use the gpt partition. First, use the parted

After some CentOS and other Linux systems are started, a read progress bar may appear waiting for the system to enter. it is very unfavorable for us to learn about the Linux startup process. we can restore it to display the detailed startup process

1. Merge row zj @ zj :~ /Script/blog_script $ cattest000034 merge the upper and lower lines of zj @ zj :~ /Script/blog_script $ sed '$! N; s/\ n/\ t/'test1000034 merge matching mode and the next zj @ zj :~ /Script/blog 1. merge rows Zj @ zj :~

Add environment variables in centOS to directly edit the/etc/environment file, and modify the PATH environment variable in it. PATH =. :/bin:/usr/bin:/sbin:/usr/sbin: usr/local/bin this method takes effect only after the system is restarted. If the

Tr is used to convert characters from standard input through replacement or deletion. Tr is mainly used to delete control characters in a file or convert characters. Note: tr can only replace, contract, and delete characters, but cannot replace