🗒️ +(...) is part of extended globs, you need to enable them explicitly with
shopt -s extglob🗒️ expansions support glob -NOT- regex
https://www.gnu.org/savannah-checkouts/gnu/bash/manual/bash.html#Shell-Expansions https://www.gnu.org/savannah-checkouts/gnu/bash/manual/bash.html#Pattern-Matching
${var} Value of var, same as $var
${var,,} lowercase
${var^^} UPPERCASE
${#var} Returns the length in characters
${var-DEFAULT} If var not set, evaluate expression as $DEFAULT *
${var:-DEFAULT} If var not set OR null, evaluate expression as $DEFAULT *
${var=DEFAULT} If var not set, evaluate expression as $DEFAULT *
${var:=DEFAULT} If var not set, evaluate expression as $DEFAULT *
${var+OTHER} If var set, evaluate expression as $OTHER, otherwise as null string
${var:+OTHER} If var set, evaluate expression as $OTHER, otherwise as null string
${var?ERR_MSG} If var not set, print $ERR_MSG *
${var:?ERR_MSG} If var not set OR null, print $ERR_MSG *
${!varprefix*} Matches all previously declared variables beginning with varprefix (works with arrays)
${!varprefix@} Matches all previously declared variables beginning with varprefix (works with arrays)
# shorted matching
## longest matching
${var/foo/bar} Replace FIRST MATCH
${var/foo} DELETE first match
${var//foo} DELETE all matches
${var/%foo/bar} Replace SUFFIX
${var/%foo} DELETE SUFFIX
${var%%foo/bar} Replace LONG SUFFIX
${var/#foo/bar} Replace PREFIX
${var/#foo} DELETE PREFIX
${var##foo/bar} Replace LONG PREFIX
${var//foo/bar} Replace ALL instances of foo with bar