interactive shell

First, we think of the export (equivalent to declare-x) command: $ export | grep ' Declare-x _= ' Not found, so the conclusion is _ is not an environment variable? Of course it's not that simple, otherwise this article

PHP is an open-source server-side scripting language. at first, these three letters represent "PersonalHomePage", but now they represent "PHP: HypertextPreprocessor" PHP is an open-source server-side scripting language. at first, these three letters

Guide In the General Linux or Unix system, can be edited BASHRC and profile to set up the user's working environment, many articles for profiles and BASHRC are also used, but what is the role of each file and how to use it? First we

MongoDB is a product between relational databases and non-relational databases. It is the most like a relational database in non-relational databases. Supports query languages similar to object-oriented MongoDB is a product between relational

Original address The idea of real-time business intelligence is no longer a novelty (a page on this concept appeared in Wikipedia in 2006). However, although people have been discussing such schemes for many years, I have found that many companies

The SET command displays all environment variables set for a particular process, but does not include some default environment variables that do not have a value setYou can assign a value to an environment variable by an equal sign, which can be a

Interactive shell and non-interactive shell,login shell and non-login shell. First, this is divided into two different dimensions, one is interactive, and the other is whether to log in or not. . The interactive mode is where the shell waits

Using zsh in Mac OS X, the environment variable path will become very chaotic, showing that the path you set is always placed after the system path, and some paths will be duplicated. This is because we don't quite understand the order in which the

The memcached on the line is dead again. Still not getting the core file.For troubleshooting reasons, a colleague discovers that there is a suspicious problem with the script that launches memcached.Issue One: memcached working folder is not set, it

When you start the shell, it runs the startup file to initialize itself. Which file to run depends on how the shell interacts with a login shell or a non-landing shell (for example, through bash) or a non-interactive shell (to execute shell scripts).

Paramiko is a module written in the Python language that follows the SSH2 protocol and supports remote connection to the server in an encrypted and authenticated manner. 1. Install the Pycrypto module first before installing Paramiko. The setup

First, Shell historyThe role of the shell is to explain the execution of the user's commands, the user enters a command, the shell interprets the execution of one, which is called Interactive (Interactive), and the shell has a way of executing the

Execute scriptWrite a simple script test.sh:#! /bin/shCD. LSThe shell script uses # notation, which corresponds to the C//comment. However, if # is at the beginning of the first line and is #! (called shebang), the exception is that the script uses

Anyway, after a few days will retire, the Emacs configuration released for the benefit (scourge) of the public?Thick Oier style, in addition to convenient to play the code is no other use (F8 do not think so? ), only a pity that Windows lost, only

1. Download the JDK corresponding to your system on the Oracle website64-bit system, download linuxx64,jdk-8u65-linux-x64.tar.gz32-bit system, download linuxx86,jdk-8u65-linux-i586.tar.gz2. Create the installation directory and unzip the

Refer to "Linux command, editor and Shell Programming" (Tsinghua University Press)When you start the shell, it runs the startup file to initialize itself. Which file to run depends on how the shell interacts with a login shell or a non-landing shell

Linux shell script execution and configuration files Bash Script Execution method:1 interpreter runs/usr/bin/bash bash foo.sh 2 run script with path (requires x permission) chmod +x foo.sh/path/to/foo.sh 3 use. or so The Urce command executes

1. First use Help to understand Su, sudo su, sudo2. Second, understand "login Shell" and "interactive shell"."When Bash starts executes the commands in a variety of different scripts.(1) When started as an interactive login Shell:bash reads and

MongoDB is a product between relational and non-relational databases, most like relational databases in non-relational databases. Supports an object-oriented query language that can achieve almost the most functionality of a relational database

* No Port * No files are left after the startup.* Generally, there is no problem of UDP single packet 512 bytes. Of course, if you execute amazing commands, I can't* Non-Interactive shell, that is, you cannot use carriage return to write multiple