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Is the following extension of finite state automata studied? You want to be certain that something either happened correctly or that it appears as though it didn't happen at all.Say you had a script to add users. Code: rsync something --log-file=/tmp/rsync_errors.log || \ mail -s "Errors Occured in Rsync" [email protected] < \ /tmp/rsync_errors.log ... The fix is to use: if [ ! -e $lockfile ]; then trap "rm -f $lockfile; exit" INT TERM EXIT touch $lockfile critical-section rm $lockfile trap - INT TERM EXIT else this contact form

Last edited by codeseer; April 12th, 2009 at 03:43 PM. return 0 } do_work \ && report ok || report err Further, continuing from the above example, you can add blanket rules via a 'trap' in the script that will always In the en_US.UTF-8 locale (and all other UTF-8 locales), it does! commands shown above are general pseudo-code, and just typed from memory without running them.

Bash On Error Send Mail

more hot questions question feed lang-sh about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation exit 1 # stop the script } ls foobar [[ "$?" != "0" ]] && errorHandler # is $? If $tempdir is on the same filesystem, this is guaranteed to leave you with either the original file, or the new file, but never a broken copy. (For different filesystems, it vBulletin ©2000 - 2016, Jelsoft Enterprises Ltd.

  • You then need to use¬†-0¬†with xargs.
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  • Unfortunately shell scripts are full of subtle effects which result in scripts failing in unusual ways.
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cp -a /var/www /var/www-tmp for file in $(find /var/www-tmp -type f -name "*.html"); do perl -pi -e 's/www.example.net/www.example.com/' $file done mv /var/www /var/www-old mv /var/www-tmp /var/www This means that if there If you don't "exit" on errors, at least set a variable like "error" and, at the end of your script use something like:if [[ error ]] ; then /bin/mail -s Good for cron. Bash Error Code Check DESDIR=/mybackupfolder # Destination of backup file.

If you need or want that behaviour, you can always just add LANG=en_US.UTF-8 LC_ALL=en_US.UTF-8 LC_CTYPE=en_US.UTF-8 before the sed command, on the same line, to change the locale only for the sed Bash Error Message Nominal Animal View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by Nominal Animal View Blog 04-20-2012, 06:55 PM #5 Dafydd Member Registered: If it succeeds, only the contents of the file are changed (although actually the entire file is replaced). Main Menu LQ Calendar LQ Rules LQ Sitemap Site FAQ View New Posts View Latest Posts Zero Reply Threads LQ Wiki Most Wanted Jeremy's Blog Report LQ Bug Syndicate Latest

Join them; it only takes a minute: Sign up bash send errors by email up vote 3 down vote favorite I wrote some bash script that does some backup job. Bash Error Trap tar -cpzf $DESDIR/$FILENAME $SRCDIR #Email Notification if [ "$?" = "0" ]; then echo "Backup Process was Successful. There are other constructs you could use: command if [ "$?"-ne 0]; then echo "command failed"; exit 1; fi could be replaced with command || { echo "command failed"; exit 1; anything but 0 then echo "oeps..." # your code goes here...

Bash Error Message

I think I get what you're saying. You can also use the slightly more readable set -o nounset. Bash On Error Send Mail H.Haider 61 How to Remote Desktop Linux Machine from windows 7 H.Ali 7 Squid RPM based installation using yum H.Ali 11 GTA V D3Dcompiler_43.dll is File Missing Error Solved !!! Bash Error Redirect Why does Windows show "This device can perform faster" notification if I connect it clumsily?

Join our community today! http://waspsoft.com/bash-error/bash-error-exit.html Email is already set up to send messages to my domain. #!/bin/bash begin=$(date --date="19:00" +%s) end=$(date --date="21:00" +%s) now=$(date +%s) if [ "$begin" -le "$now" -a "$now" -le "$end" ]; then Why are some programming languages Turing complete but lack some abilities of other languages? Another example is rm. Bash Error Output

I can adjust email alert but want to know how to check for errors and successful attempt. Here is a real world example: A typical operation in a script like this is to create a temporary working directory. Not the answer you're looking for? navigate here I could essentially do this: Code: rsync something --log-file=/tmp/rsync_errors.log if $? != 0 cat /tmp/rsync_errors.log | mail -s "Errors Occured in Rsync" [email protected] fi That's part pseudo, because I don't know

You need to make sure that both the old and the new directories are moved to locations that are on the same partition so you can take advantage of the property Bash Error 127 Be prepared for spaces in filenames Someone will always use spaces in filenames or command line arguments and you should keep this in mind when writing shell scripts. Can a creature benefit from differently typed speed bonuses all named fast movement?

Then use "||" to run a command upon failure, such as: #!/bin/bash cp foo bar \ && mv bar bar{,.bak} \ && echo "good so far" \ && ls file123 |

Not the answer you're looking for? Be atomic Sometimes you need to update a bunch of files in a directory at once, say you need to rewrite urls form one host to another on your website. User contributions on this site are licensed under the Creative Commons Attribution Share Alike 4.0 International License. Bash Error To Stdout Using Map to convert Feet + Inches to Inches in a List of Lists Adopt A Jet/Book Can a creature benefit from differently typed speed bonuses all named fast movement?

Search this Thread 04-01-2012, 11:36 PM #1 khandu Member Registered: Sep 2003 Posts: 93 Rep: Bash Shell program question - if error then mailx Hey Guys Multiple questions Basically They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own. How do i do some kind of error trapping here that if 1) export file OR mkdir OR mv fails (or any return other than 0 from what i understand) then his comment is here Unfortunately it means you can't check $?

What I have now is: Code: BACKUPLOG="/tmp/backup.log" rm -f $BACKUPLOG function checkforerrors { if [ "$?" -ne "0" ]; then cat $BACKUPLOG | mail -s 'Backup Error' [email protected] fi } rsync A possible solution to this is to use IO redirection and bash's noclobber mode, which won't redirect to an existing file. Visit the following links: Site Howto | Site FAQ | Sitemap | Register Now If you have any problems with the registration process or your account login, please contact us. This is not the best way to set restrictions or logging.

Seems like I need to actually learn 'bash'. But I want the scripts errors to be included in the email body. exit 1 # stop the script } MONTH=$1; YEAR=$2; cd work [[ "$?" != "0" ]] && errorHandler; cp /media/VOLUMELABE/DCIM/101EKAIO/*.jpg . [[ "$?" != "0" ]] && errorHandler; convert *.jpg -adjoin For details and our forum data attribution, retention and privacy policy, see here Visit Jeremy's Blog.

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