Tracnac/shell array.md

Created September 30, 2022 18:35

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Shell Array #shell #bash

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shell array.md

arr=()	Create an empty array
arr=(1 2 3)	Initialize array
${arr[2]}	Retrieve third element
${arr[@]}	Retrieve all elements
${!arr[@]}	Retrieve array indices
${#arr[@]}	Calculate array size
arr[0]=3	Overwrite 1st element
arr+=(4)	Append value(s)
str=$(ls)	Save ls output as a string
arr=( $(ls) )	Save ls output as an array of files
${arr[@]:s:n}	Retrieve n elements starting at index s

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