Linux

Each application runs a copy of the library from memory, so this library is called a shared library. All files on Linux, which have access to these files on Linux, are controlled by permissions.Linux uses three types of users to achieve the control

I usually log on to Linux using the shell to log on, but if this time we have the need to browse the Web, such as I have just deployed to a site, but I do not know if I have a successful deployment, and can only be accessed on this Linux, other

1. Ensure that the job $KETTLE _HOME/KITCHEN.SH-FILE=/DATA1/TESTDATA/TESTKJB.KJB or converted $KETTLE _home/pan.sh-file=/data1/testdata/ TESTKTR.KTR can perform normally under LinuxThis step is configured correctly in the JDK (Ps. Optional

One, more commandsMore features like cat, the Cat command is the entire contents of the file displayed on the screen from top to bottom. More will be a page-by-page display to facilitate users to read pages, and the most basic instruction is to

Note: The Linux wildcard conforms to the Three Musketeers (grep,awk,sed) Regular expression is not the same, therefore, the meaning of the Representative is alsoThere's a big difference.Wildcard characters General user commands bash environment,

The main methods are download installation and cloud installationDownload installationCloud Installation1. Locate the file/etc/yum.repos.d/nginx.repo and add the following code (if the file does not exist, you can create it

Ls-l View PermissionsDrwxr-xr-xR Read file, view file contentsW, write and delete;X, executeChmod Modifying folder permissionsExample: chmod o-x RootDir (rootdir Other users delete x rights)File permission GroupsRoot URoot Group GOther users OAll

Programming to a certain time, always like the pursuit of new things. The code as much as possible is one of my pursuit, the original is only satisfied with the code from a single file separation, through the header file and implementation of the

Bash:1. Command history, Command completion2, Pipeline, redirect3. Command aliases4. Command line editing5. Command line expansion6. File name Wildcard7. Variables8. Programmingcommand-line editing:Cursor Jump:CTRL + A: Skip to the beginning of the

1, netstat-A: Show all connections-T: displaying TCP-related-U displays UDP-related-N: Do not add n words, Netstat will be anti-resolution IP for the domain name display, plus the words are disabled anti-parsing, speed up-P: Show process-L: Plus l,

Project analysisThe realization of the remote installation:Configuration Dhcp+http+tftp providesGraphical PXE menu via VESAMENU.C32 moduleProvide KS answer files for different systems separatelyThe third-party RPM package is provided as a Yum Source:

Disk Partitioning: a disk can be split into multiple partitions artition. How disk links are Normal physical machines use all the /dev/sd[a-] the hard drive file name The virtual machine may use / dev / VD [ a-p

the Linux rsync remote synchronization1. Case650) this.width=650; "src=" Https://s5.51cto.com/wyfs02/M01/9B/77/wKioL1ljZHGy8RY-AAAnhkiYgGM266.png "style=" float : none; "title=" Image 1.png "alt=" Wkiol1ljzhgy8ry-aaanhkiyggm266.png "/>1. Start

Download genymotion http://www.genymotion.cn/on official website Then do the following1. If the machine does not have VirtualBox download a can be downloaded via the instruction sudo apt-get install VIRTUALBOX-QT2. Download the genymotion to do the

/ Dev A directory of device files, such as sound cards, magnetic cards, optical drives, etc.Cat/dev/null >/data/test.txt to Empty the contents of the Test.txt. / Boot   ( Static Files of the Loader linux / Bin    ( Essential user

There is a development report today, SFTP cannot log in. Check the service is normal, before March also had this problem, when busy did not pay attention, now look every 3 months there is a problem. This is the result of password expiration.Reset

1. Install the OpenSSL static Library "PIP3 installation required, if already installed please skip"Yum Install-y openssl-static2. Install GCC and wget "If you have already installed, skip"Yum install-y gcc wgetYum Groupinstall "Development

Window version:CMD under execution:1. Find the process under a port number:NETSTAT-ANO|FINDSTR 8080If the port number has a process, the list appears after the command is executed, and the number in the last column indicates the process number under

Linux network configuration-virtual network card configuration (ubuntu), linuxubuntu I will not introduce the graphic interface configuration here. This is very simple. This section describes how to modify the configuration file to implement a

Solve the problem of Chinese garbled characters in CentOS7 (including Chinese garbled characters in Tomcat logs ). Garbled Chinese language in Linux is a problem that many of our friends often encounter when getting started with Linux. When we