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How to write a bash function

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From: Sammy B.
Category: product essay
Added: 11.04.2021
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It only takes a minute to sign up. Connect and share knowledge within a single location that is structured and easy to search. I'd like to write a function that I can call from a script with many different variables. For some reasons I'm having a lot of trouble doing this. Examples I've read always just use a global variable but that wouldn't make my code much more readable as far as I can see. Like you know, functions work in any proper language.
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Write Output of Bash Command to Log File – Example

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How to Pass Arguments to a Bash Script

If you have a few years of experience in the Linux ecosystem, and you're interested in sharing that experience with the community and getting paid for your work, of course , have a look at the "Write for Us" page. Cheers, Eugen. Alternatively, we can also omit the parentheses if we use the function keyword. The body can be any compound command , while redirections are also optional and performed when the function is executed. We mentioned before that we could define functions in two ways.
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How to Pass Arguments to a Bash Script

If you get tired of writing the same lines of code again and again in your bash script, it would be nice to write the block of code once and call it anywhere in your bash script. Bash functions are blocks of code that you can reuse them anywhere in your code. Anytime you want to use this block of code in your script, you simply type the function name given to it. We are going to talk about how to create your bash functions and how to use them in shell scripts. Also, you can define the function using the function keyword, but this keyword is deprecated for POSIX portability.
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Using Math in Bash scripts becomes a necessary evil when writing complex crontab reports, monitoring plugins, setup scripts with dynamic configurations, or any other kind of automation like showing a Raspbery PI CPU temperature. There is always some type of arithmetic calculations to be made. This post covers a few examples on how to do basic mathematical operations elementary arithmetic like multiplication and addition in Bash with integers or floating-points numbers.
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