Hi,
I could see different bash behaviour and do not know if these are regressions
in jessie or fixes for jessie. I searched for bugrepots (bash jessie) but did
not find something I could connect to it
itemcoumt in "version 2" differs and especially "version 3" bothers me: error
exit in jessie and NO error exit when running in stretch).
Yours lopiuh
===========================
CODE:
===========================
#!/usr/bin/env bash
set -o errexit # (set -e)
set -o nounset # (set -u)
set -o pipefail
shopt -s nullglob # enable
#shopt -s failglob
#set -o noglob
clear
echo "===========================Version 1==========================="
echo "Bash Version: $BASH_VERSION"
echo -n "IFS:"; echo "$IFS" | cat -vte
echo
unset _array; declare -a _array
_inputstring="$(echo -e "item01\nitem02\nitem03")"
echo "inputstring:"
echo -n "$_inputstring" | xxd; echo
read -ra _array <<<$(echo $_inputstring) # <<< NO -"- around string
echo "itemcount of array: ${#_array[@]}"
for i in "${_array[@]}"; do
echo -n "element: "; echo -n "$i" | xxd; echo
done
#
echo "===========================Version 2==========================="
echo "Bash Version: $BASH_VERSION"
echo -n "IFS:"; echo "$IFS" | cat -vte
echo
unset _array; declare -a _array
_inputstring="$(echo -e "item01\nitem02\nitem03")"
echo "inputstring:"
echo -n "$_inputstring" | xxd; echo
read -ra _array <<<$(echo "$_inputstring") # <<< WITH -"- around string
echo "itemcount of array: ${#_array[@]}"
for i in "${_array[@]}"; do
echo -n "element: "; echo -n "$i" | xxd; echo
done
echo "===========================Version 3==========================="
echo "Bash Version: $BASH_VERSION"
echo -n "IFS:"; echo "$IFS" | cat -vte
echo
unset _array; declare -a _array
_inputstring="telnet*"
echo "inputstring:"
echo -n "$_inputstring" | xxd; echo
read -ra _array <<<$(echo $_inputstring) # <<< NO -"- around string, 0 item due
to globbing. errexit in jessie, no exit in stretch
echo "itemcount of array: ${#_array[@]}"
for i in "${_array[@]}"; do
echo -n "element: "; echo -n "$i" | xxd; echo
done
echo "Ende"
exit
OUTPUT in jessie:
===========================Version 1===========================
Bash Version: 4.3.30(1)-release
IFS: ^I$
$
inputstring:
0000000: 6974 656d 3031 0a69 7465 6d30 320a 6974 item01.item02.it
0000010: 656d 3033 em03
itemcount of array: 3
element: 0000000: 6974 656d 3031 item01
element: 0000000: 6974 656d 3032 item02
element: 0000000: 6974 656d 3033 item03
===========================Version 2===========================
Bash Version: 4.3.30(1)-release
IFS: ^I$
$
inputstring:
0000000: 6974 656d 3031 0a69 7465 6d30 320a 6974 item01.item02.it
0000010: 656d 3033 em03
itemcount of array: 3
element: 0000000: 6974 656d 3031 item01
element: 0000000: 6974 656d 3032 item02
element: 0000000: 6974 656d 3033 item03
===========================Version 3===========================
Bash Version: 4.3.30(1)-release
IFS: ^I$
$
inputstring:
0000000: 7465 6c6e 6574 2a telnet*
itemcount of array: 0
/mnt/data/sh/finalize_installation.sh: Zeile 91: _array[@] ist nicht gesetzt.
===============================================================
OUTPUT in stretch:
===============================================================
===========================Version 1===========================
Bash Version: 4.4.5(1)-release
IFS: ^I$
$
inputstring:
00000000: 6974 656d 3031 0a69 7465 6d30 320a 6974 item01.item02.it
00000010: 656d 3033 em03
itemcount of array: 3
element: 00000000: 6974 656d 3031 item01
element: 00000000: 6974 656d 3032 item02
element: 00000000: 6974 656d 3033 item03
===========================Version 2===========================
Bash Version: 4.4.5(1)-release
IFS: ^I$
$
inputstring:
00000000: 6974 656d 3031 0a69 7465 6d30 320a 6974 item01.item02.it
00000010: 656d 3033 em03
itemcount of array: 1
element: 00000000: 6974 656d 3031 item01
===========================Version 3===========================
Bash Version: 4.4.5(1)-release
IFS: ^I$
$
inputstring:
00000000: 7465 6c6e 6574 2a telnet*
itemcount of array: 0
Ende
