[lug] Bash-ing an FTP log summary

[Kenneth D. Weinert]

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I think it's simpler than that - this little scriptlet sounds like it
might do what you're asking for.

#!/bin/bash

declare -i in
declare -i out

((in = 0))
((out = 0))
while read direction amount; do
    if [ "$direction" ==  "i" ];then
	((in += $amount))
    else
	((out += $amount))
    fi
done

echo "Input:  $in"
echo "Output: $out"



and run it like:

scriptname < datafile

Bill Thoen wrote:
> Thanks... I'll try that. Both methods are new to me, but I should be able
> to figure out the syntax once I know what to look for! 
> 
> - Bill Thoen
> 
> 
> On Tue, Jun 27, 2006 at 08:24:56PM -0600, Tony Dyson wrote:
>> First thought is that "cut" & a "for i in `cat <tmp-file>`; do 
>> [etcetera]" might help you to get the numerical component into a 
>> variable for further manipulation.
>>
>> Bill Thoen wrote:
>>> Hi folks,
>>>
>>> I'm trying to write a bash script to summarize total daily FTP transfers
>>> (in terms of data transfered in and out) from my vsftp logs. So far, I've 
>>> got a file
>>> that produces output like this each day:
>>>
>>> o 123456
>>> o 32456
>>> i 1235
>>> o 123456
>>> ... etc. 
>>>
>>> The 'o' is out and 'i' is in. The number is the amount transfered. What I
>>> want to do is summarize the transfers each day and add them to a running
>>> total in a file. Can I do this in a bash script? How?
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