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← Revision 3 as of 2023-01-29 21:15:40 ⇥
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| Deletions are marked like this. | Additions are marked like this. |
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| An array can be declared splicitly like: | An array can be declared explicitly with the `declare` [[Bash/BuiltinCommands#Declare|builtin]]: |
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| myarray=("first" "second" "third") | myarray=( "first" "second" "third" ) |
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| myarray+="new item" | myarray+=( "new item" ) |
Bash Array
Contents
Declaration
An array can be declared explicitly with the declare builtin:
declare -a myarray
An array is also declared implicitly by any of:
myarray[0]="item in first index of new array" myarray=( "first" "second" "third" )
Usage
To append a new value to an existing array, try:
myarray+=( "new item" )
To access an item from an array, try:
first="${myarray[0]}"
last="${myarray[-1]}"To access a slice of an array, try:
all="${myarray[@]}"
all_but_first="${myarray[@]:1}"
first_three="${myarray[@]::3}"The length of an array is available with ${#myarray[@]}.