Cron job stderr to email AND log file?

Question

I have a cron job:

$SP_s/StartDailyS1.sh >$LP_s/MirrorLogS1.txt

Where SP_s is the path to the script and LP_s

Answer 1

Unless I'm missing something:

command 2>&1 >> file.log | tee -a file.log

2>&1 redirects stderr to stdout

>> redirects regular command stdout to logfile

| tee duplicates stderr (from 2>&1) to logfile and passes it through to stdout be mailed by cron to MAILTO

I tested it with

(echo Hello & echo 1>&2 World) 2>&1 >> x | tee -a x

Which indeed shows World in the console and both texts within x

The ugly thing is the duplicate file name. And the different buffering from stdout/stderr might make text in file.log a bit messy I guess.