Shell Programming and Scripting

In the following script, I wish to invoke a compiled C++ program, consimv4 and pass it some command line arguments through the shell script's command line arguments and variables. But for some reason, when I run the script, I just return to the shell prompt and nothing happens. For the life of me, I can't locate what syntax error I am committing. Could someone point out my error, please? I am running bash.

Code:

ants=3
l_max=1000
init_pher=20
ef=0.8
beta=30
iter=1
qo=0.3
for (( i = $1 ; i <= $2 ; i++ ))
do
 `./consimv4 rbdatacsimNov1.txt 0 $i 1 0 a ants $ants l_max $l_max init_pher $init_pher ef $ef beta $beta iter $iter q0 $q0`
done

Why the backticks? I would get rid of them and see what happens.

Sure. In that case, the variable values aren't passed to the consimv4 program. It throws a segmentation fault with the following command line:

./consimv4 rbdatacsimNov1.txt 0 $i 1 0 a ants $ants ......

As you can see the variable value substitution isn't taking place.

What is the shell that you use for your script?

/bin/bash

Are you sure there isnt a problem with the C++ app? What happens when you try this from the command line:

Code:

  ./consimv4 rbdatacsimNov1.txt 0 0 1 0 a ants 3 l_max 1000 init_pher 20 ef 0.8 beta 30 iter 1 q0 0.3 done

Keep replacing the second 0 and count up until you reach whatver $2 is.

Use set -x inside the script to see what's going on.