ScriptingLesson 52Free preview

Bash Arrays

This lesson is part of Bash · All levels

Summary

Bash arrays store many values in one variable, created with parentheses containing a list of values separated by spaces. Elements are accessed via an index starting from 0, whereas @ takes the entire element. Bash also provides a way to calculate array lengths and key-based associative arrays.

Key points

Arr=(a b c) makes an array, the index starts from 0
${arr[0]} takes the first element
${arr[@]} takes the whole element
${#arr[@]} count the number of elements

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