= Bash Array =

<<TableOfContents>>

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== Declaration ==

An array can be declared explicitly with the `declare` [[Bash/BuiltinCommands#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" )
}}}

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== 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[@]}`.



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