mail-notice.md

<some-command> | tee some.log ; \
  ( [[ ${PIPESTATUS[0]} -eq 1 ]] \
  && (tail some.log | mail -s '<some-command> exited with error' you@example.com) \
  || (tail some.log | mail -s '<some-command> finished' you@example.com) )

breakdown:

<some-command> | tee some.log;
run command, tee output to log (display in terminal, and writes to file)

(
group this stuff

[[ ${PIPESTATUS[0]} -eq 1 ]]
check exit code of <some-command>. this is bash specific.

&& (tail some.log | mail -s '<some-command> exited with error' you@example.com)
on success, email tail of log

|| (tail some.log | mail -s '<some-command> finished' you@example.com)
else, on fail also email tail of log

)
close