Shell Programming and Scripting

i have a file called Cleaner1.log . This files have some blank lines also.My requirement is that it should ignore the blank lines and give me the lines that contain some data.

I m using this logic in a script:

below the contents of file :

Maximum Time Taken for Processing(Failed) RR Message with DB Read : 0 ms
Minimum Time Taken for Processing(Failed) RR Message with DB Read : 0 ms
Maximum Time Taken for Processing(Successful) RR Message without DB Read : 1608 ms
Minimum Time Taken for Processing(Successful) RR Message without DB Read : 1 ms
Average Time Taken for Processing(Successful) RR Message without DB Read : 25 ms
Maximum Time Taken for Processing(Failed) RR Message without DB Read : 2897 ms
Minimum Time Taken for Processing(Failed) RR Message without DB Read : 2 ms
Average Time Taken for Processing(Failed) RR Message without DB Read : 11 ms
***** Completed Execution Summary *****

--------------------------------------------------------------------------

after the line "***** Completed Execution Summary *****" there is another line (i.e. last line ) which is totally blank,so when i gave the below command it shows the value as 1

cat Cleaner1.log | tail -1 | wc -l---------->1

i want whenever i do tail and if the last line is blank line it should give me the count as 0

plz help me in this ?

in both ways if you wrote tail -1 | wc -l, the answer will always be one.

What do u want exactly, do you want to know if the last line is empty ?

yes if the last line in empty/blank then the count should be zero and then i can go ahead with my rest of the script.

i just want if the last line in empty/blank then the count=0

still "\n" (last line) will be counted as 1 character, so I think you need
so if it's new empty line.. wc -m should equal to 1

tested on #! /bin/sh

if ((`cat Cleaner1.log | tail -1 | wc -m` == 1))

then
echo " last line is empty"

fi

Hope I understood your problem.

i got the problem solve with the below command. hope this is feasible

tail -1 Cleaner1.log | grep -v "^$" | wc -l---------> 0