Linux

chmodView command Ls-l-RWX r_x r_x 4 user Grop 1024 omittedFile type Owner permissions with group People permissions other people permissions hard connections number owner owner Group size ...-Representative documentsD Represents a FolderR Read

System environment: RHEL5.8 VMwareOne, analog MBR damage:1. Backup Mbr:dd if=/dev/sda of=/root/mbr.txt count=1 bs=5122. Damage Mbr:dd If=/dev/zero OF=/DEV/SDA count=1 bs=2003.reboot4. Disc Repair: VMware Setup starts from CD5. Enter the start screen:

View ports#lsof-I: Port number|\ viewing process information based on port numberExample: #lsof-i:8080Command PID user FD type Device size nodeJava 15419 root 29u ipv6 8277 tcpName*:webcache View process corresponding executable program according to

#tail-F-N-catalina.outMeaning: monitor catalina.out files from the tail of the file main look at the tail 100 lines#tail-F-N catalina.out > nohup.out&------------can also specify the path to the output file& Into the background> Output content to

ChownChown-r MySQL. /usr/localChange the/usr/local/and all of its files and subdirectories to MySQLLs-al * ChgrpChgrp-r mysql/usr/localChange the/usr/local and all files and subdirectories under it to MySQLWays to delete users and groupsAct 1 >

1 diff comparison of two files#diff-y test.txt test.txtAll of the output source and destination files. The left and right two columns.aaaa aaaabbb | BCCC dddNote | Represents two different rows in a file> indicates that the line

Space or ctrl+f forward one screen ctrl+b back one screenEnter forward line/string finding pages that contain string strings? string Ibid. N Same-direction lookupN Reverse Lookup= Current line numberCtrl+u file Move up half screen Ctrl d moving half

Dmidecode is used to view device hardware information, including device model,BIOS, System, motherboard, processor, memory, cache details, and more. Common parameters:# dmidecode-hUsage:dmidecode [OPTIONS]Options are:-D,--dev-mem file Read memory

-n ..... --line-numbers use lines NUMBERS. Displays line numbers. -m- m ... . --long-prompt --long-prompt Set prompt style. The percentage of the read file, line number, and total number of rows. q : Q- q :

Linux Command ls, linuxls What? List contents of a directory How? Ls [-ABCFGHLOPRSTUW @ abcdefghiklmnopqrstuwx1] [file...] Points -- Common Parameters Ls-l displays detailed information about the directory file [linux File Attributes] Ls-t sort by

Install the vsftpd server in Centos 6.5 and centosvsftpd1. Check whether vsftp is installed. [Root @ localhost ~] # Rpm-qa | grep vsftpd IfVsftpd-2.2.2-13.el6_6.1.x86_64Vsftp has been installed. If no fields such as vsftpd appear, perform step 2; 2.

Build your own VPN Server (centos 6.x), centos6.x 1. Download the one-click installation script # touch vpn_centos6.sh# chmod a+x vpn_centos6.sh   #!/bin/bashfunction installVPN(){ echo "begin to install VPN services"; #check wether vps suppot

Detailed explanation of VMware networking after Minimal installation of CentOS Minimal Recently I want to create a mailman email list, and I don't want to experiment on my commonly used CentOS 6.4. I am afraid it will damage the environment. So I

Linux software installation . Deb is the ubuntu and debian formats;. rpm is the redhat, fedora, and suse formats. They are not common.Yum Yum (all called Yellow dog Updater, Modified) is a Shell front-end Package Manager in Fedora, RedHat, and

Cat commands use linux redirection to merge files Take a look at the document: [doctor @ localhost Documents] $ cat -- help usage: cat [Option]... [file]... output A [file] or a combination of standard input to standard output. -A, -- show-all

The beauty of Java [from cainiao to expert drills] the use of vi and vim editors in LinuxAuthor: erqingPersonal site: zhangerqing.cn mail: xtfggef@gmail.com Weibo: http://weibo.com/xtfggef Vi is a commonly used text editor in linux. Basically, all

Linux commands-more When we use linux/unix, we often need to view the file content or log. Normally, we will choose the cat command, but sometimes our file is too long to go beyond a screen, in this way, it is inconvenient to view the above

Enable the rewrite module for Apache in ubuntu Enable rewrite Module Sudo a2enmod rewrite In the/etc/apache2 directory, the options are "mod-available" and "mod-enabled ). The above command alone is not enough to rewrite the mechanism for

Install go lang in CentOS 6.5)1. Set the system environment variable [plain] view plaincopyprint? Vi/etc/profile Add at the end (press the I key to enter the editing status, drag the cursor down, add the following, and then press: wq to save

The CentOS system sends an error message to your frequently used mailbox.Root User TransferWhen an error occurs in the system or an important notification is sent to the root user, let the system automatically forward the email to our usual mailbox,