I have a bunch of log files generated from a shell script, its all of my facebook friends and if theyre logged in. Each file is a different person. It runs every 5 minutes. The log file is just the date and time, then 1 if theyre logged in or 0 if theyre not. part of one of the files is:
Code:
Mon Aug 30 17:11:13 EDT 2010 = 0
Mon Aug 30 17:16:13 EDT 2010 = 0
Mon Aug 30 17:21:13 EDT 2010 = 0
Mon Aug 30 17:26:13 EDT 2010 = 0
Mon Aug 30 17:31:13 EDT 2010 = 1
Mon Aug 30 17:36:17 EDT 2010 = 1
Mon Aug 30 17:41:13 EDT 2010 = 0
Mon Aug 30 17:46:14 EDT 2010 = 0
Mon Aug 30 17:51:14 EDT 2010 = 0
so they logged in from around 17:31 to around 17:36.
I am wondering if it would be possible to get just that. Get that information from the log and output it like that, John Smith logged in from 7:30 to 10:00 on Monday, August 30. If you would like to know how i'm logging it i could show that too, in case theres another way i could log it so its like that. also, i'm using bash on OS X.
if theres another post like this, please, direct me to it. I wasn't sure what to search for.
thanks, frans, thats exactly what I wanted. I'll just change the date format. thanks for the help.
---------- Post updated at 11:42 PM ---------- Previous update was at 05:34 PM ----------
well, sadly, the first few times it worked like a charm! and, i got it going with awk to show how many minutes they were logged in, too! but, for some odd reason, it still works and prints the results, but i get an error.
Code:
organize.sh: line 6: ((: -: syntax error: operand expected (error token is "-")
organize.sh: line 6: ((: 0-: syntax error: operand expected (error token is "-")
That's certainly due to a line (the last one?) in your log file that doesn't contain the '=' sign. So it reads A and B but B is empty. A turnaround : insert the bold command
Code:
while read A B
do
B=${B:-0}# if B is empty, then set it to 0
if (($B-$C))
then (($B)) && echo -n "logged in from $A" || echo "to $A"
fi
C=$B
done <logfile
ah thank you. now there is no error and it also removes duplicates. I was changing things yesterday and some of the lines are messed up, and the date didnt change for 5 entries, and before it showed all 5, but now it only shows 1. also, I did stop it from saying the error myself, by changing
As you can see the result with this little script, the result of [ $B-$C ] is always true.
Code:
#!/bin/bash
for B in 0 1
do
for C in 0 1
do
echo -n "B=$B C=$C ((\$B-\$C)) --> "
if (($B-$C))
then echo -n "TRUE "
else echo -n "FALSE"
fi
echo -n " [ \$B-\$C ] --> "
if [ $B-$C ]
then echo "TRUE"
else echo "FALSE"
fi
done
done
The logic i involved ist that it should do something if second field is different from previous line and the result of previous script is
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Value2=def
Value3=xyz
Hostname1
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Value2=def1
Value3=xyz1
Hostname2
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Value2=def2
Value3=xyz2
|
|
|
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