interactive shell

1. Hive function: http://www.cnblogs.com/end/archive/2012/06/18/2553682.html 2. Hive QL language: https://cwiki.apache.org/Hive/languagemanual-ddl.html#LanguageManualDDL-Create%252FDropTable 3. creat [External] table ...... location '/***/'

/Etc/profile: This file sets the environment information for each user in the system. When the user logs on for the first time, the file is executed and starts from/etc/profile. the configuration file in the d directory Collects shell

LinuxDetailed description of self-starting settings Linux has its own complete startup system, which captures the context of Linux Startup. the Linux Startup Process will no longer be mysterious.   In this article, we assume that the init tree set

Mac OS Python on X In MacOSX, for python InstallationThere are two options: install or not install. You may want to install it. MacOSX 10.2 and later versions have pre-installed a pythonCommand Line version.If you are used to using command line,

Linux has its own complete startup system, which captures the context of linux Startup. the linux Startup Process will no longer be mysterious. You can manually add and delete the required application services as needed. In this article, we assume

[Linux] what is ifs?1. Introduction of IFS IFS (Internal Field Seprator), which is The Internal domain separator. the complete definition is "the shell uses The value stored in IFS, which is the space, tab, and newline characters by default, to

EMACS If Bash finds that the value of this variable is 'T' in the environment when the shell is started, it considers that the shell runs in the Emacs shell Buffer and does not allow row editing. ENV Similar to BASH_ENV, it is used in shell

Sudo command: if you use a Linux Command, the following error occurs: sudolinux Have you ever received the "Permission denied" error message when running Linux commands? This may be because you are trying to perform an operation that requires the

[Linux] what is ifs? linuxifs1. Introduction of IFS IFS (Internal Field Seprator), which is The Internal domain separator. the complete definition is "the shell uses The value stored in IFS, which is the space, tab, and newline characters by default,

Solve the error prompt when running Linux commands Have you ever received the "Permission denied" error message when running Linux commands? This may be because you are trying to perform an operation that requires the root permission. For example,

Differences between bashrc and ProfileTo understand the differences between bashrc and profile, first understand what is interactive shell and non-interactive shell, What Is Login Shell and non-login shell.In interactive mode, shell waits for your

Linux has its own complete startup system, which captures the context of Linux Startup. the Linux Startup Process will no longer be mysterious. In this article, we assume that the init tree set in inittab is: /Etc/rc. d/rc0.d/Etc/rc. d/rc1.d/Etc/rc.

The SET command can be used to set various shell options or to list shell variables. A single option can be used to set common features.After some options, the-O parameter opens special features. After some options, using the + O parameter will

Summary: The advent of Apache Spark has made it possible for ordinary people to have big data and real-time data analysis capabilities. In view of this, this article through hands-on Operation demonstration to lead everyone to learn spark quickly.

The difference between BASHRC and profileTo understand the difference between BASHRC and profile, first figure out what the interactive shell and non-interactive shell are, and what the login shell and non-login shell are.The interactive mode is

One sentence a day =.=!: Complaining is only incompetent performance, without it! Therefore, try to avoid too much contact with people who complain all day long.No wonder brother Ma so grounded gas son, full of is positive energy 650) this.width=650

On the surface it means: The current bash PID, but the various shell environments to understand thoroughly.Official explanation:BashpidExpands to the process ID of the current bash process. This differs from$$ under certain circumstances, such as

Linux knowledge: Similarities and differences between/ROOT/.BASHRC and/etc/profileTo understand the difference between BASHRC and profile, first figure out what the interactive shell and non-interactive shell are, and what the login shell and

The difference between BASHRC and profileTo understand the difference between BASHRC and profile, first figure out what is interactive shell and non-interactive shell, what is Loginshell and non-login shell.The interactive mode is where the shell

The importance of a Linux environment variable conceptOriginally used for Linux to learn the robot operating system (ROS), because have not been exposed to Linux, so do not understand some of the key concepts, resulting in a lot of detours, such as