The following deletes all pages whose page title matches the regex provided in all the spaces listed by key:
confluence -a runFromList --list ACLI,CSOAP,JCLI,BCLI,SCLI,FCLI,CRUCLI --common "--action runFromPageList --space @entry@ --regex .*3.9.0-SNAPSHOT.* --common \"-a removePage --id @pageId@\" "