Bash 5.1 allows a very straight forward way to display associative arrays by using the K value as in ${arr[@]@K}: $ declare -A arr $ arr=(k1 v1 k2 v2) $ printf "%s\n" "${arr[@]@K}" k1 "v1" k2 "v2" From the Bash 5.1 description document: hh. Any reference to a variable using a valid subscript is legal, and bash will create an array if necessary. There is no maximum limit on the size of an array, nor any requirement that members be indexed or assigned contiguously. (For more information, see arrays in bash). An "associative array" variable (declare -A) is an array of key-value pairs whose values are indexed by a keyword. An array in BASH is like an array in any other programming language. See the -f and ⦠No problem with bash 4.3.39 where appenging an existent key means to substisture the actuale value if already present. You can then set the key-value pairs of the userinfo associative array individually: userinfo[name]="armin" userinfo[shell]=bash userinfo[website]="scriptingosx.com" When you set the value for an existing key again , it will overwrite the existing value: The null string is a valid value. In addition to variables, bash functions can be assigned attributes which affect their behavior. In BASH script it is possible to create type types of array, an indexed array or associative array. You can see here that the first assignment, the one done via the list incorrectly adds the key as a\ b rather than simply as a b.. Before ending I want to point out another feature that I just recently discovered about bash arrays: the ability to extend them with the += operator. An array is a variable that can hold multiple values, where each value has a reference index known as a key. Print all elements, each quoted separately. The leftover contents of the first array should then be discarded and i want to assign the temp array to the original array variable. An array variable is considered set if a subscript has been assigned a value. An associative array lets you create lists of key and value pairs, instead of just numbered values. Is there a way of reading the last element of an array with bash? Bash, however, includes the ability to create associative arrays, and it treats these arrays the same as any other array. name is any name for an array; index could be any number or expression that must evaluate to a number greater than or equal to zero.You can declare an explicit array using declare -a arrayname. 11 Count number of elements in bash array, where the name of the array is dynamic (i.e. bash documentation: Accessing Array Elements. stored in a variable) Sudo code: declare ⦠Referencing an array variable without a subscript is equivalent to referencing with a subscript of 0. 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