interactive shell

Shell built-in command Shopt this built-in command changes the optional behavior of the extra shell. Shoptshopt [-pqsu] [-o] [optname & hellip;] switches the values of variables used to control various optional shell behaviors. If the option is not

Bash-shell Startup File Linux uses environment variables to identify itself in programs and scripts. This provides a simple way for your program to obtain system information. The question is how to set these variables. When you log on to Linux and

In everyday English, the shell can be translated into shells, most of which means a device or structure that can protect the inner core. In computer science, the shell actually refers to a provider that can use the entire computer's resources

Shell startup File 1. when logging on to a non-logon or interactive non-interactive shell user (after entering the user name and password), the shell started is the login shell, after logon, you can use bash -- login to start a logon shell. the user

When we perform some bash-related operations, such as setting aliases and logging on to startup items, we will deal with the following files more or less. When we use them, we will check them and forget them. A good memory is not as bad as a pen.

1. Basic Concepts A, I/O redirection is usually related to FD, Shell FD is usually 10, namely 0~9; b, commonly used FD has 3, for 0 (stdin, standard input), 1 (stdout, standard output), 2 (stderr, standard error Output), the default and keyboard,

Environment VariablesThe --bash shell uses environment variables to store system-related data and allows data to be stored in memory. Environment variables are divided into: Global environment variablesLocal environment variables

Recently, learning about bash, you learned about Bash's basic classification and its associated configuration files. When referring to some information on the internet, it was found that some of the information on the Internet was confusing and not

Refer to Linux Command, editor and shell programming (Tsinghua University Press) When shell is started, it will run the Startup File to initialize itself. The specific file to run depends on whether the shell is a login shell or a non-Login Shell

Click Back to learn the path of the Linux command line and shell script6.3-System environment variable persistenceWhen you log in to the Linux system to launch a bash shell, bash looks for commands in several files by default, which becomes the

The environment variable configuration file is primarily defined as the system default environment variables, such as path, that are in effect for the system operating environment. When you log on to a Linux system to launch a bash shell, bash looks

[------------------------- [Hacking bash History] ---------------------------][===================================================== ===============================================] By:

Shell Environment Variable Classification and set env export differences: Set: Display (SET) private variables and user variables included in Shell variables. Shell of different classes have different private variables bash, KSh, and CSH. Each shell

SET commandIt can be used to customize the shell environment and use the option "O" to enable or disable the option. For example, enable option: set-O option, and disable option: Set + O. Shopt commandIs an alternative to the set command, which is

Environment variable configuration file in CentOS, centos environment variable CentOS environment variable configuration file system is a hierarchical system, which is similar to other multi-user application system configuration files, including

Interactive shell and non-interactive shell (interactive shell and non-interactive shell) The interactive mode is executed on the terminal, the shell waits for your input, and executes the command you submitted immediately. This pattern is

Three ways to start bash shell1, log in as the default login shell2. Interactive shell as a non-login shell3. As a non-interactive shell for running scriptsFirst, login shellWhen you log in to a Linux system, the bash shell starts as a login shell,

# Linux LVM Tool full version: http://xin23.blog.51cto.com/1827266/1198836 (update 2013.5.13) # Scripts are only used for communication and learning!# The current script version is 1. 0. creates, removes, changes (enables/disables allocation),

# scripts are only for Exchange learning and use! # The current version of the script is 1.0. Implements the creation of physical volumes, removing, changing (enabling/disabling assignments), scanning, viewing features. # The following will

Bash should be the most important thing we have in daily work, like our most loyal friends, and we need to know the "habits" of this friend.Bash has several different modes of operation, the login shell and the Non-login shell,interactive shell and