Fix timestamp issue on Busybox and add remote filter option, other fixes
Pre-release
Pre-release
- fix timestamp issue when using busybox
- Redirect to &2 rather than stderr.
- Replace 'echo -n' with 'printf'
- Add remote filter option
For example, users can set the environment variable
ZAP_FILTER_REMOTE="mbuffer -s 128k -m 5M
and zap will filter 'zfs receive' on the remote location through mbuffer.