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When I run the command:
/path/to/utility/ABC ) >>/tmp/output
I get a syntax error at the ). What shell are you using that allows you to run that command?

What OS are you using?

If the...

This is a very common problem that has been answered many times before. Start with this FAQ on cron and crontab (https://www.unix.com/answers-to-frequently-asked-questions/13527-cron-crontab.html)...

A better approach would be to use a while read loop instead:
while read queue size
do
...
done < $configfile

Instead of
for queue in `cat ${configfile}|cut -d ' ' -f1`
do
...
...

Line 24 has an unquoted argument for grep that does an unwanted match against the current directory (and eventual replacement).
Please change it to this:

...
x=`grep -c "$queue"...

Hmm, some UUOC but cannot see a syntax error.
Even not in line 48.
Were there some special characters?
Perhaps they were removed when you copied to this Wiki page?
Can you copy back to...

Yes that would be required, or at least the relevant section, anonymized if need be, and used with [code] tags.

The grep command is getting 2 values for tellabs7100

0 for tellabs7100
30 for tellabs7100N

and that is why the value 0^J30 is seen, ^J is actually unix line feed.

Since grep-ing for...

Please correct the code tags, it is difficult to read.
Also, paste the output of sh -x yourscript