bash - pipe command to mailx and do not send mail if no content -

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i have system (rhel5) not support mailx's -e option (for not sending email if body empty). there 1 liner use simulate feature? eg first send, second wouldn't

echo 'hello there' | blah | mailx -s 'test email' me@you.com echo '' | blah | mailx -s 'test email' me@you.com

well. "one-liner" sort of relative, since these technically one-liners may not suit you:

stuff=$(echo 'hello there') ; [ -n "${stuff}" ] && echo ${stuff} | mailx -s 'test email' me@you.com stuff=$(echo '') ; [ -n "${stuff}" ] && echo ${stuff} | mailx -s 'test email' me@you.com

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