I solved this just cleaning/declaring the statusCheck associative array before the cicle: An "associative array" variable (declare -A) is an array of key-value pairs whose values are indexed by a keyword. 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. Declaring an Array and Assigning values. (For more information, see arrays in bash). The Bash provides one-dimensional array variables. 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. Referencing an array variable without a subscript is equivalent to referencing with a subscript of 0. The null string is a valid value. 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: In bash, array is created automatically when a variable is used in the format like, name[index]=value. 1. Any variable may be used as an array; the declare builtin will explicitly declare an array. No problem with bash 4.3.39 where appenging an existent key means to substisture the actuale value if already present. 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). In addition to variables, bash functions can be assigned attributes which affect their behavior. Bash, however, includes the ability to create associative arrays, and it treats these arrays the same as any other array. Any reference to a variable using a valid subscript is legal, and bash will create an array if necessary. The leftover contents of the first array should then be discarded and i want to assign the temp array to the original array variable. 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" "${arr[@]@K}" k1 "v1" k2 "v2" From the Bash 5.1 description document: hh. echo "${array[@]}" Print all elements as a single quoted string bash documentation: Accessing Array Elements. See the -f and … Print all elements, each quoted separately. stored in a variable) Sudo code: declare … An associative array lets you create lists of key and value pairs, instead of just numbered values. Arrays are indexed using integers and are zero-based. 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