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expr not working

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# 1  
Old 12-22-2010
Question expr not working
I am trying to get some coubt through the following code.
Code:
tot_ln_cnt=`wc -l ${OUTPUT_FILE_NAME}`
echo "tot_ln_cnt : "$tot_ln_cnt
fl_cnt=`ls -lrt *edi | wc -l`
echo "fl_cnt : "$fl_cnt
exclude_cnt=`expr $fl_cnt \* 2`
echo "exclude_cnt : "$exclude_cnt
ln_cnt=`expr $tot_ln_cnt - $exclude_cnt`
echo "ln_cnt : "$ln_cnt
if [ "${ln_cnt}" -gt 0 ]
then
echo "Total "${ln_cnt}" records written to the file "${OUTPUT_FILE_NAME} >>  ${LOG_FILE_NAME} 2>&1
else
echo "No records written to the file "${OUTPUT_FILE_NAME} >>  ${LOG_FILE_NAME} 2>&1
fi

but each time, I am getting a expr: Syntax error, while running this . along with that the value ln_cnt is not geting generated.
Also, the ln_cnt value might come as negative, if no records written...is the above code enough to get it done?
# 2  
Old 12-22-2010
write
Code:
exclude_cnt=`expr $fl_cnt * 2`

instead of
Code:
exclude_cnt=`expr $fl_cnt \* 2`

write
Code:
if [ $ln_cnt -gt 0 ]

instead of
Code:
if [ "${ln_cnt}" -gt 0 ]

R0H0N
# 3  
Old 12-22-2010
Its not working
Rohon,
I am getting the value of fl_cnt and exclude_cnt also....I think the problem is gerring generated while calculating ln_cnt....please help
# 4  
Old 12-22-2010
can you try as..
Code:
exclude_cnt=$(expr "${fl_cnt}" \* 2)

similarly make the changes to variable ln_cnt= ... and check
# 5  
Old 12-22-2010
MySQL Now its working fine.
I have found the bug...as i told you, the issue was not with fl_cnt or exclude_cnt. the issue was with tot_ln_cnt. the command
Code:
`wc -l ${OUTPUT_FILE_NAME}`

was giving the output "2465 PHCAE03DX".
So, I used
Code:
`cat ${OUTPUT_FILE_NAME} | wc -l`

instead of
Code:
`wc -l ${OUTPUT_FILE_NAME}`

in the existing code.
Thanks for your reponse.
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