Change fHits in zfs-stats to use loop to reduce code duplication
Remove string eval from _call_all in zfs-stats
Remove string eval from argument processing in zfs-stats
Remove use of sed and dc from _system_memory in zfs-stats
Remove use of awk and dc from _system_memory in zfs-stats
Remove use of sed and xargs from _system_info in zfs-stats
Remove mention of sed and dc from preamble