Bash doesn’t directly support returning arrays from functions. However, we can achieve this using clever techniques. This article explores two effective methods: using command substitution and manipulating the Internal Field Separator (IFS). Table of Contents Command Substitution Returning Arrays with Command Substitution Returning Arrays with IFS Choosing the Best Method…
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Efficiently Removing the First Character of a String in Bash
Removing the first character from a string is a common task in Bash scripting. This article explores three efficient methods to achieve this: using sed, cut, and Bash’s built-in substring expansion. Each method offers different advantages, allowing you to select the most appropriate technique for your specific context. Table of…
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Efficiently Removing Duplicate Lines in Bash
Removing duplicate lines from a text file is a common task in Bash scripting. This article explores two efficient methods: using sort and uniq, and leveraging the power of awk. Table of Contents Using sort and uniq Using the awk Command Using sort and uniq This approach combines two fundamental…
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Precisely Getting Yesterday’s Date in Linux
Retrieving yesterday’s date is a frequent task in Linux scripting and automation. This guide presents two reliable methods using the built-in date command and explores the considerations for handling time zones. Table of Contents Using the date Command Handling Time Zones for Greater Accuracy Using the date Command The simplest…
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Bash Progress Bars: Three Powerful Methods
Progress bars are invaluable for providing visual feedback during lengthy processes, offering users a clear indication of task progress. While Bash lacks native progress bar support, several external tools and libraries offer robust solutions. This guide explores three distinct methods: leveraging the pv command, utilizing the dialog command, and employing…
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Efficient File Counting in Bash
Accurately counting files within a directory is a fundamental task in Bash scripting. This guide presents two methods, highlighting their strengths and weaknesses to help you choose the best approach for your situation. Table of Contents Using the find Command Using the ls Command Using the find Command The find…