On Sat, Feb 8, 2014 at 2:59 PM, S. Dale Morrey <[email protected]>wrote:
>
> This makes me wonder if I need to specify HOME as in "export HOME=/root"
> I'm going to give that a shot and see if it solves the problem.
>
>
It may depend on what version of cron you have installed. Here is what mine
says about it:
Several environment variables are set up automatically by the
cron(8) daemon. SHELL is set
to /bin/sh, and LOGNAME and HOME are set from the /etc/passwd line
of the crontab's owner.
PATH is set to "/usr/bin:/bin". HOME, SHELL, and PATH may be
overridden by settings in the
crontab; LOGNAME is the user that the job is running from, and may
not be changed.
When I had a problem like this before, the thing that fixed it for me was
to wrap the command in a script. So, your cron entry might be:
0 1 * * * /bin/bash /root/backup_mysql.sh
and then your script would simply be:
#!/bin/bash
mysqldump dbname
I never figured out the actual problem, but I'm sure it was related to
environmental variables like you suggest or perhaps the difference between
/bin/sh and /bin/bash.
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