Shell script to execute Oracle procedure and trigerring email on success and failure


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# 15  
I'm gald this got you moving again. You should really test this hard too and work out how to handle errors in creating the file that might mean you:-
  • have multiple lines
  • have multiple values on a single (or multiple) line(s)
  • have non-numerics
  • an empty file
.....just to be careful.




Kind regards,
Robin
# 16  
Sure Robin. In this case, we are handling only 0 and 3 digit numeric values . But in other cases like you mentioned (multiple lines,empty files) can we use sed(for displaying nth line) and grep(for finding the particular text )?
# 17  
Yes, the value of outvar will just hold all the content of your file. You might prefer to process the variable or create another by reading the file in a different way. It's up to you, but you can use many ways to read specific things. For example:-
  • To read the 3rd line, this would do sed -n3p This could be written as third_line="$(printf "%s" "${outvar}" | sed -n3p)" or third_line="$(sed -n3p filename)" depending
  • To set a value if your file is null, you could [ ! -s filename ] && variable=0
  • To set a value if your variable is null, you could [ -z "${outvar}" ] && outvar=0
  • To scan for non-numerics and set the value to zero, you could attack it in several ways, e.g. delete the digits from the string and see if there's anything left; try to add zero and check the return code (writing all output/error messages to /dev/null to keep it clean) etc. etc. It depends what makes sense to you.


Does this help you sanity check your data?



Robin
This User Gave Thanks to rbatte1 For This Post:
# 18  
Dear Robin-That will really help me to do the sanity check.
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