The Bash Script To Configure The Firewall Using IPTABLES

The following config will discuss a basic example on how to execute shell script during a boot time on systemd Linux. There maybe various reason why you might want to execute shell script during Linux startup like for example to start a particular custom service, check disk space, create a backup etc. Install Windows Subsystem for Linux (WSL) on Windows 10 Before installing any Linux distributions on Windows, you must enable the "Windows Subsystem for Linux" optional feature. The term 'wsl' is not recognized as the name of a cmdlet, function, script file, or operable program. Ensure that the Windows Subsystem for Linux Optional Component is installed. Additionally, if you are using an ARM64 Source command - Linux Shell Scripting Tutorial - A Apr 08, 2012

In Linux, the file specified by interpreter can be executed if it has the execute right and contains code which the kernel can execute directly, if it has a wrapper defined for it via sysctl (such as for executing Microsoft .EXE binaries using wine), or if it contains a shebang. On Linux and Minix, an interpreter can also be a script.

Linux Shell - What is Linux Shell? What is Shell Script?

Apr 11, 2019 · The inner workings of the check_book.sh script are beyond the scope of this article. The script was chosen purely to illustrate a valid use of the sleep command. If you wish to read more about the two main components of the script, refer to the curl project page and the jq on-line manual.

How to define and use functions in Linux Shell Script How to define and use functions in Linux Shell Script. by Pradeep Kumar · Updated February 14, 2020. Function is a reusable block of code. Often we put repeated code in a function and call that function from various places. Library is a collection of functions. We can define commonly used function in a library and other scripts can use them What is the $? (dollar question mark) variable in shell