Concatenating strings and run it in bash

Shell Programming and Scripting
1

Hi, all,

I tried to write a simple shell script as follow:

#!/bin/bash

# What want to do in bash is following
#   : pcd_viewer cloud_cluster_0.pcd cloud_cluster_1.pcd cloud_cluster_2.pcd cloud_cluster_3.pcd cloud_cluster_4.pcd

STR = "pcd_viewer"
for i in `seq 0 4`
do
    STR = $STR " cloud_cluster_i"$i
done
echo $STR

It gives following error messages:

I will appreciate for any help!

Best,
bedeK

2

remove the space between STR and =

STR="pcd_viewer"
for i in `seq 0 4`
do
    STR=$STR " cloud_cluster_i"$i
done
echo $STR