SCRIPT - Multiple programs in multiple terminals

Question

I made a script so I can easily execute multiple programs in different terminals by just writing

./script.sh (numberofprogramstype1) (numberofprogramstype2)

The problem is it only executes one of each type, even though I am looping it based on the arguments given. Here is my code:

gcc program1.c -lpthread

for i in {1..$1}
do
       gnome-terminal -e ./a.out
done

gcc program2.c -lpthread

for i in {1..$2}
do
        gnome-terminal -e ./a.out
done

Why is this happening and how can I solve it?

chepner · Accepted Answer · 2017-03-30 17:57:14Z

1

Brace expansion happens before parameter expansion; you can only use hard-coded numbers in them. Use a C-style for loop instead.

# {1..$1}
for ((i=1;i<=$1;i++)); do
   ...

answered Mar 30, 2017 at 17:57

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chepner

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