Variables Bash

Ubuntu Set Shell environment variable open configuration file: Vim ~/.BASHRC at the end of the file, add the following export variable name = variable such as: Export Java_home=/usr/lib/jvm/java-6-sunexport PATH = $PATH: ~/mybin Log off and log on again, the new environment variable takes effect. In the HTTP://WWW.ALIYUN.COM/ZIXUN/AGGREGATION/13 ...

Setting and removing environment variables in character mode in Linux? Bash settings: Export variable name = variable Value Delete: unset variable name CSH set: SETENV variable name variable value Delete: Unsetenv variable name

This method is urgently needed to record what time to try ^^ In Linux, you can use the crontab + php method: 1, the use of crontab-e edit the contents of regular tasks: xx: xx: xx Execute a test.php File 2, php file must be in the first line of the file, with the interpreter path (as perl do) #! / Usr / local / bin / php PHP implementation requires Apache support, she ...

The friendly interactive shell, just like its name, fish is a very friendly shell, highly recommended! Use the command sudo apt install fish to install it. When you are done, run the command fish to switch to fish and exit back to bash. A brief introduction to its advantages: automatic completion, syntax highlighting the automatic completion of bash is only the completion of the full command, the path, if you want to complement the full variable, parameters, etc., usually need to use complex combination ...

We can write shell scripts using either http://www.aliyun.com/zixun/aggregation/18452.html > Text editor, such as Gedit, Kedit, Emacs, VI, etc. It must start with the following line (must be placed on the first line of the file): #!/bin/sh ... Note: It is best to use "!/bin/bash" instead of "!/bin/sh" if you use TC shell instead of TCS ...

With the development of Docker, the ecosystem of Docker is getting more and more mature. There are many open source projects related to Docker on GitHub. Recently, CenturyLink summarized 10 blogs based on Docker's development tools, mainly on http://www.aliyun.com/zixun/aggregation/14123.html"> PaaS platform, cluster management, continuous integration and Docker Management tools, etc. four ...

Select VirtualBox to establish Ubuntu server 904 as the base environment for the virtual machine. hadoop@hadoop:~$ sudo apt-get install g++ cmake libboost-dev liblog4cpp5-dev git-core cronolog Libgoogle-perftools-dev li Bevent-dev Zlib1g-dev LIBEXPAT1-...

C and c++++ are recognized as the preferred platform for creating high-performance code. A common requirement for http://www.aliyun.com/zixun/aggregation/7155.html "> developers is to expose C + + code to the scripting language interface, which is exactly what simplified wrappers and Interface Generator (SWIG). SWIG allows you to extend to a wide range of feet ...

Gtkdialog is a guihttp://www.aliyun.com/zixun/aggregation/18378.html > Graphical user interface creation tool that can be used with any annotation device. The tool enables programmers to describe a graphical user interface for a simple XML language and create any annotation callback function that supports files, standard I/O, and environment variables. It can also serve as an external program for an annotation, but can only be used as an independent application framework to provide Stan ...