bash documentation: Accessing Array Elements. See the -f and … Print all elements, each quoted separately. Bash, however, includes the ability to create associative arrays, and it treats these arrays the same as any other array. Is there a way of reading the last element of an array with bash? An associative array lets you create lists of key and value pairs, instead of just numbered values. 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. 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. The Bash provides one-dimensional array variables. In BASH script it is possible to create type types of array, an indexed array or associative array. There is no maximum limit on the size of an array, nor any requirement that members be indexed or assigned contiguously. Arrays are indexed using integers and are zero-based. You can assign values to arbitrary keys: $ I solved this just cleaning/declaring the statusCheck associative array before the cicle: An array is a variable that can hold multiple values, where each value has a reference index known as a key. In addition to variables, bash functions can be assigned attributes which affect their behavior. In bash, array is created automatically when a variable is used in the format like, name[index]=value. stored in a variable) New `K' parameter transformation to display associative arrays as key-value … No problem with bash 4.3.39 where appenging an existent key means to substisture the actuale value if already present. The null string is a valid value. 11 Count number of elements in bash array, where the name of the array is dynamic (i.e. Any variable may be used as an array; the declare builtin will explicitly declare an array. 1. 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: 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. An array variable is considered set if a subscript has been assigned a value. Declaring an Array and Assigning values. Questions: I need to loop over an associative array and drain the contents of it to a temp array (and perform some update to the value). (For more information, see arrays in bash). 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