Linux in a Nutshell, Fourth Edition

Name

for

Synopsis

                  for (
                  item  
                  in 
                  array
                  )
                  command
               

For each item in an associative array, execute command. Multiple commands must be put inside braces. Refer to each element of the array as array [ item ]. Elements of gawk arrays are stored in an order that enables access of any element in essentially equivalent time. This order may appear to be indiscriminate; if the output is desired in sorted order, you must pipe it through the sort command.