Clive Menzies wrote:
>     rsync_opts="-av --exclude-from=exclude_list --delete --delete-excluded"
>         exclude_list=/root/uhuru_backup/exclude_list
> rsync: failed to open exclude file exclude_list: No such file or directory (2)

The decisive difference between dialog and cron could be the
current working directory. 

Try with an absolute path as parameter to --exclude-from= :

  rsync_opts="-av --exclude-from=/root/uhuru_backup/exclude_list --delete 

Or if you want to use the variable exclude_list, set it first.
Then evaluate it by $exclude_list in the definition of variable rsync_opts:

  rsync_opts="-av --exclude-from=$exclude_list --delete --delete-excluded"

This should yield the same rsync_opts content as above line.

> echo "Currently at line 17">>$log_file
> /root/uhuru_backup/uhuru.daily.sh: line 17: $log_file: ambiguous redirect

Hm. To what value did you set the variable log_file ?

If i set it to "/tmp/log_file", then the echo works in dash and bash.
(We have to expect that cron uses the shell dash, whereas the dialog
 shell is probably bash.)
If i set it to empty text, then dash complains
  dash: 2: Syntax error: newline unexpected
bash says
  -bash: syntax error near unexpected token `newline'

A blank would do it in bash but not in dash:

  $ log_file="/tmp/log file"
  $ echo "Currently at line 17">>$log_file
  -bash: $log_file: ambiguous redirect

dash is brutal enough to really create a file "/tmp/log file".

Have a nice day :)


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