does linux shell support list data structure

Question

this question is not the same as Does the shell support sets   i know lots of script language support list structure  such as python  python  ruby  and javascript  so what about linux shell   does shell support such syntax   for i in list  do      print i done   i would first to initialize a list   for example   ListName     item1  item2       itemn     then iterate over it  is that possible when programming shell scripts

User · Answer

For make a list  simply do that  colors  red orange white  light gray     Technically is an array  but - of course - it has all list features  Even python list are implemented with array

User · Answer

It supports lists  but not as a separate data structure  ignoring arrays for the moment    The for loop iterates over a list  in the generic sense  of white-space separated values  regardless of how that list is created  whether literally   for i in 1 2 3  do     echo   i  done   or via parameter expansion   listVar  1 2 3  for i in  listVar  do     echo   i  done   or command substitution   for i in   echo 1  echo 2  echo 3   do     echo   i  done   An array is just a special parameter which can contain a more structured list of value  where each element can itself contain whitespace  Compare the difference   array   item 1   item 2   item 3   for i in    array       do     The quotes are necessary here     echo   i  done  list   item 1   item 2   item 3   for i in  list  do     echo  i done for i in   list   do     echo  i done for i in   array      do     echo  i done

[linux] does linux shell support list data structure?

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