cron email only on error North Olmsted Ohio

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cron email only on error North Olmsted, Ohio

more hot questions question feed lang-bsh about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation This site is not affiliated with Linus Torvalds or The Open Group in any way. Just omit the | mail -s "Backup status" [email protected] part and email will only be sent when there is output. So if it isn't broken, it isn't cron.

The cron job STDOUT and STDERR redirects are ONLY for cron job EXECUTION STDOUT and STDERR. It is almost impossible to create a non-trivial cron job that is quiet enough to run without output, but still reports all errors. Category: linux sysadmin Tags: bash, cron, cron job, crontab, email, errors, ubuntu server Post navigation ← Install Ubuntu Linux on Chrome Cr-48 shellinabox With Apache Authentication Over HTTPS 443 → Leave Should foreign words used in English be inflected for gender, number, and case according to the conventions of their source language?

Log in or register to post comments #7 Wed, 08/15/2012 - 06:44 Locutus Please note though that this method of course only works if the script/application actually does send regular output Then use the MAILTO environment variable to send any output generated by your script to your email address. I have tried many other tasks and scheduling options, and cron executed them all exactly as expected. Cronic defines an error as any non-trace error output or a non-zero result code.

During the last ~2 hours, this was executed more than 120 times already, as I can verify with piping the output to wc -l. share|improve this answer edited Sep 8 at 11:39 Law29 2,3731319 answered Feb 13 '12 at 21:43 Ricardo Pardini 41638 I really don't see how that will help when the Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the Sorry, the cron job has been failing due to permission errors for months - all your files are gone.

Why was the Rosetta probe programmed to "auto shutoff" at the moment of hitting the surface? But occasionally it manages to squeeze out its error message very quickly while cron is still listening. –Celada Aug 25 '15 at 2:52 Many thanks for looking into this, What you actually need is to pipe stderr to stdin of mail. share|improve this answer answered Jan 24 '11 at 9:51 Khaled 23.9k53660 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign

[email protected] 0 */2 * * * /bin/ If your script normally produces output but you don't care about it in cron, just sent it to /dev/null and it'll email you only This is being sent to /dev/null in the above example. "2>" is the "error" output. I understand how to do that for individual cron jobs, but the scripts in those special directories are run using run-parts. One possibility is to store it in a shell variable: output=$(php /path/to/script.php) if [ $? -ne 0 ]; then printf "%s\n" "$output" fi This doesn't completely preserve the script's output (it

Also, I'm aware-but-not-familiar with the latest Debian using systemd; are there new or custom startup parameters there? Cronic's main advantage it is small, simple and a shell script. Will password protected files like zip and rar also get affected by Odin ransomware? Are there any saltwater rivers on Earth?

My home PC has been infected by a virus! Make stderr file descriptor a copy of stdout (that already pointed to /dev/null). But you want to see unsuccessful email notifications. Solution Specify this as the cron job: >> logfile 2>&1 || echo "Error occurred.

Are old versions of Windows at risk of modern malware attacks? causing the cron job to have no output and thus no mail. Related 2Cron daemon error : Permission Denied0Sending cron output to email?4Mail cron output only when Git throws a real error18cron ignores variables defined in “.bashrc” and “.bash_profile”1Mailing output of cron1What causes Using the MAILTO variable The MAILTO variable allows you to set the email address that the notification emails from Cron are sent to.

Delayed output from orphaned grandchild process is simply discarded. The content of all three mails reads exactly as expected and contains exactly the error message that is to be expected from running the script in an incompatible shell (on purpose). Test it yourself in a /bin/sh environment (assuming you do not have a file named 'bar' here): (grep foo bar) & echo $? Or in the less-clear way because of confusing order of redirectings: /prog 2>&1 > /dev/null | mail ...

Dungeons in a 3d space game Is there any difference between friendly and kind? Theoretically, could there be different types of protons and electrons? So, if you want to keep error notifications, don't redirect STDERR, just STDOUT: COMMAND > /dev/null If you do the typical >/dev/null 2>&1, you are effectively suppressing both (bash documentation). How do I set cron to only email when there is an error or, if possible, run "service" silently (unless there is an error)?

[email protected] 0 */2 * * * /bin/ > /dev/null share|improve this answer answered Jan 24 '11 at 9:53 Cakemox 13.1k52957 add a comment| up vote 8 down vote Using cronic wrapper The script always writes output (see below) and we thus expect cron to send the output to me via mail for each invocation. share|improve this answer answered Sep 8 '09 at 21:59 Shizzmo 8,52331314 1 "If there is no STDERR output, you won't get any mail." That's true, if I set MAILTO="[email protected]". Is it dangerous to compile arbitrary C?

I am the developer of the Alpha Framework for PHP, and the personal productivity app. Sorry if this seems basic, I have googled a lot but can't seem to find this answered succintly. Arguments for the golden ratio making things more aesthetically pleasing How to implement \text in plain tex? Please let me know if you did anything additional to get it to work.

If Energy is quantized, does that mean that there is a largest-possible wavelength? What does Billy Beane mean by "Yankees are paying half your salary"? There are many ways to work around the obvious mistake that led to the above observations: I can set SHELL=/bin/bash in my crontab. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the

If you want to preserve trailing blank lines: output=$(php /path/to/script.php; ret=$?; echo a; exit $ret) if [ $? -ne 0 ]; then printf "%s" "${output%a}" fi If there's potentially a lot