In message , "Michal Kepien via RT" writes: > Most contemporary shells execute each command of a multi-command > pipeline in a subshell environment. Environment variables set inside a > subshell do not affect the parent shell's environment. Meanwhile, the > rrchecker system test sets the ret variable inside a while loop which is > the last command in a pipeline. Thus, while error messages will be > printed out when named-rrchecker encounters a problem, these problems > will not affect the result of the system test. The shell is broken if { } fails to update the variable. If ( ) was being used then you would have a point. > This issue seems to be have been present in the code ever since > named-rrchecker was added by commit 49c1e0d18d. -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: marka@isc.org