For adding the values, is it enough if you get the sum at the end? Then awk is all you need:
Code:
awk '/Segment/ { gsub("secs",""); time += $3 } END { print time }' file.txt
If you really genuinely want to loop over the cumulative times and do something which each in the shell, that would be something like
Code:
awk '/Segment/ { gsub ("secs",""); time += $3; print $3, time } file.txt |
while read THISTIME SUMTIME; do
echo This time, we got $THISTIME
echo Sum so far is $SUMTIME
done
The shell's arithmetic facilities are integer only, so you can't sum numbers with fractional parts in the shell itself. Getting awk to print both the current and the cumulative value for each line is a nice workaround for that (and a good opportunity to demonstrate how to read multiple values from the same line in the shell).
