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The Shell is the user interface of the system, providing an interface for users to interact with the kernel. It receives the command entered by the user and feeds it into the kernel for execution.

The Shell is actually a command interpreter that interprets commands entered by the user and sends them to the kernel. Not only that, the Shell has its own programming language for editing commands, which allows users to write programs composed of shell commands. Shell programming language has many characteristics of ordinary programming language, such as it also has loop structure and branch control structure, etc. The Shell program written in this programming language has the same effect as other applications.

Linux provides a visual command input interface like MicrosoftWindows - the X Window Graphical User Interface (GUI). It offers many desktop environments that operate just like Windows, with Windows, ICONS, and menus, all managed by the mouse. GNOME.

Each Linux system user can have his or her own user interface or Shell to meet his or her specific Shell needs.

Like Linux itself, there are many different versions of the Shell. The following versions of the Shell are available:

  1. Bourne Shell: Developed by Bell LABS.
  2. BASH: The GNU Bourne Again Shell, the default shell on the GNU operating system.
  3. Korn Shell: is a development of the Bourne SHell and is compatible with the Bourne Shell for the most part.
  4. C Shell: is the BSD version of SUN's Shell.
  5. Z Shell: The last shell you'll ever need! Z is the last letter, the ultimate Shell. It integrates the important features of bash and ksh, while adding its own unique features.
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linux shell
Date :2024-04-03 This section describes the four basic commands used to restart the Linux system
Date :2024-04-03 Reasons for crontab execution failure and some solutions
Date :2024-04-01 Description of commands for viewing disk information in Linux
Date :2024-03-26 This section describes how to use the nmcli command in Linux
Date :2024-03-22 Summary of the problem of exclamation marks in double quotes in Bash Shell
Date :2024-03-22 Linux Shell script syntax error: unexpected end of file Causes and solutions
Date :2024-03-21 Linux uses the Split command to split and merge files
Date :2024-03-21 Summary of methods for clearing file contents for Linux disk operations
Date :2024-03-19 The method of time synchronization using ntpdate in Linux is implemented
Date :2024-03-18 Analysis of the number of parameters passed into the script by $# in the main function of shell script
Date :2024-03-16 Examples of sed using regular expressions for substitutions and considerations
Date :2024-03-10 Summary of methods for checking file sizes in Linux systems
Date :2024-03-07 This section describes four commonly used compression commands in Linux
Date :2024-03-07 shell script one-click deployment of docker implementation steps
Date :2024-03-05 Use of Shell pipes and filters
Date :2024-03-05 Linux command systemctl usage details
Date :2024-03-05 In the shell script if judgment '-a' - '-z' specific use
Date :2024-03-03 Use the Shell echo, printf, and test commands
Date :2024-03-01 Linux shell string interception, replacement, deletion, and trim code examples
Date :2024-03-01 linux shell string operations (length, read, replace, intercept, connect, compare, delete, and position)
Date :2024-02-29 Summary of the various uses of ${} in the Shell
Date :2024-02-27 The shell implements multi-level menu scripting example code
Date :2024-02-26 Ansible Ad-hoc command execution module practical tutorial
Date :2024-02-23 Set the method and instance of Shell script startup
Date :2024-02-23 Shell scripts back up MySQL, Oracle, and PostgreSQL databases
Date :2024-02-21 jar package restart shell script problem records
Date :2024-02-19 Examples of shell regular expressions, grep commands, and sed commands are provided
Date :2024-02-19 Linux batch command details (Execute scheduled tasks when the system is not busy)
Date :2024-02-19 Analysis of the difference between double quotes and single quotes in linux shell
Date :2024-02-19 shell one-click deployment of Zabbix implementation steps
Date :2024-02-18 Detailed description of Linux file search and decompression commands
Date :2024-02-17 A summary of methods used to obtain the standard output or state of a shell command in jenkins pipeline
Date :2024-02-17 Summary of example usage of sh function in Jenkins
Date :2024-02-17 How to execute multiline Shell commands in the 'sh' step in Jenkinsfile (methods of multiline commands)
Date :2024-02-10 Delve into the implementation principles of the Linux shell
Date :2024-02-07 Linux packaging compression and decompression --tar, xz, zip, unzip command details
Date :2024-02-07 To compress and decompress Linux, run the tar|zip|rar|xz command
Date :2024-02-06 The use of -e, &, and && in bash scripts
Date :2024-02-06 Specific use of the $sign in bash scripts
Date :2024-02-06 Find command details for all real users in Linux
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