problem writing a script

john8msu · 04-13-2004, 03:07 PM

Basically I'm trying to write a script that is going to run a program with some different arguments and collect some data from it. here's what i have so far...

Code:

for (( i = 1; i <= 20; i++ ))      ### Outer for loop ###
 do
     ns lantest.tcl $i 1000 1

     for (( j = $i ; j >= 0; j-- )) ### Inner for loop ###
     do
       grep '^r [0-9]\.[0-9]* $i 0' out | wc -l
       done
 done

The statement: "grep '^r [0-9]\.[0-9]* $i 0' out | wc -l" works if i substitute the actual numbers, but doesnt want to work with the variables. This is my main problem that I need to fix and I would greatly appreciate it if someone could help me.

I could also use some suggestions for how I should go about processing the data. That grep/wc is goin to return a number of lines, but I need to do computation on it. Should I send output to a file or a variable?

I need to have a table with the value $i followed by the value returned from the grep/wc command mulitpied by 1000. I want there to be one line for each value of $i.

Thanks in advance for anyone who can help me out!

ugge · 04-15-2004, 02:34 PM

In the grep command the $i isn't expanded to the vaue but is rather passed like it is.
I don't know how to fix it in a shell script.

Bebo · 04-15-2004, 03:59 PM

What happens if you use something other than the single quotes (')? One of these, or a combination of them, might work - or not:

grep ^r\ [0-9]\.[0-9]*\ ${i}\ 0 out | wc -l

grep "^r [0-9]\.[0-9]* ${i} 0" out | wc -l

grep '^r [0-9]\.[0-9]* `echo ${i}` 0' out | wc -l

You could also make a concatenate the search string; like

SEARCHSTRING="^r [0-9]\.[0-9]* "
SEARCHSTRING="`echo $SEARCHSTRING $i` 0"

I think