Training, Open Source computer languages
PerlPHPPythonMySQLApache / TomcatTclRubyJavaC and C++LinuxCSS 
Search for:
Home Accessibility Courses Diary The Mouth Forum Resources Site Map About Us Contact
 
For 2023 (and 2024 ...) - we are now fully retired from IT training.
We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk.

Lisa and I (Graham) now live in what was our training centre in Melksham - happy to meet with former delegates here - but do check ahead before coming round. We are far from inactive - rather, enjoying the times that we are retired but still healthy enough in mind and body to be active!

I am also active in many other area and still look after a lot of web sites - you can find an index ((here))
date function in shell cmds

Posted by wilko (wilko), 22 December 2006
Hi There,

Sorry for a basic question but I can't get this to work.

I'm adding a line to my cronjobs to automate a mysqldump and this works:

mysqldump -u root -pxxxx --opt rainweb > /usr/local/apache/htdocs/rweb2/bups/backup2.sql

But, when I add in the date function I get "Illegal variable name":

mysqldump -u root -pxxxx --opt rainweb > /usr/local/apache/htdocs/rweb2/bups/backup-$(date +%m%d%Y).sql

I got this code from:
http://www.phpbb.com/kb/article.php?article_id=123

I haven't tried this from CRON, just at the command line. I can't see what's wrong with my syntax - probably my head cold!

Thanks and Merry Christmas.
JW

Posted by admin (Graham Ellis), 22 December 2006
I think you need to put the command that you run "within" in back quotes and not using the $(....) notation.

Example:

mysqldump -u root -pxxxx --opt rainweb > /usr/local/apache/htdocs/rweb2/bups/backup-`date +%m%d%Y`.sql

Posted by wilko (wilko), 22 December 2006
That worked fine from the command line but CRON doesn't like it and returns "Syntax error: EOF in backquote substitution".

I put it into an executable script, called that from CRON and that works fine.

Thanks Graham



This page is a thread posted to the opentalk forum at www.opentalk.org.uk and archived here for reference. To jump to the archive index please follow this link.

You can Add a comment or ranking to this page

© WELL HOUSE CONSULTANTS LTD., 2024: Well House Manor • 48 Spa Road • Melksham, Wiltshire • United Kingdom • SN12 7NY
PH: 01144 1225 708225 • FAX: 01144 1225 793803 • EMAIL: info@wellho.net • WEB: http://www.wellho.net • SKYPE: wellho