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conversion to integer not working

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# 1  
Old 03-21-2005
conversion to integer not working
Hello..

I have a file containg as below:
Quote:
8.5M
44M
16M
55M
3.0M
45M
12M
164M
My need is to sum the values...
but the error is showing as interger conversion..so i put int() but again not working..please help..here is my code

Quote:
sum=0
while read line
do

expr sum=$sum + int("`echo $line|awk -F'M' '{print $1}' `")
done < test123

Thanks in advance

esham
# 2  
Old 03-21-2005
here is a simple way to do it,
sed 's/M$//' filename | awk '{x += $0} END {print "total: " x "M"}'
Last edited by tanku; 03-21-2005 at 09:51 AM..
# 3  
Old 03-21-2005
Thank You...
that worked excellent... Smilie Smilie Smilie

If you dont mind ,can you explain the usage
sed 's/M$//' filename |

how sed gives the output..
is it one bt one or at a straigt the whole result...
# 4  
Old 03-21-2005
the 's/M$//' replaces the M at the end of the line ($) with nothing then pipe to awk command
# 5  
Old 03-21-2005
for replacing we have to give /g at the end..
or is that not needed..
that made me the confusion..

Smilie
# 6  
Old 03-21-2005
if you want to replace more than once you could add the 'g', but it this case there is only one end of line ($) per line so that was not necessary to add g unless you want to replace a lot of 'M's on the same line
# 7  
Old 03-21-2005
fine got it..

Thanks for the detailed explanation...

Regards
Esham
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