Can any one explain what this code will do

Shell Programming and Scripting
1

ccc_con,CCC_CON,0

Above is the input for this code

#!/usr/bin/bash
my_path=`dirname $0`
T_table=$1
S_table=$2
P_table=$3
#Star new code
while read ${my_path}/arch_table_list.txt
{
awk -F "," '{print $1}' ${my_path}/arch_table_list.txt ${S_table}
awk -F "," '{print $2}' ${my_path}/arch_table_list.txt ${T_table}
awk -F "," '{print $3}' ${my_path}/arch_table_list.txt ${P_table}
}
echo $S_table $T_table $P_table

Can anyone explain me this script

2

The commas are not actually there when invoking the script, are they?

Either way, the code does something, in my opinion, very silly. For each line in this "arch_table_list.txt", it :

  • prints out the first column of arch_table_list.txt, followed by the first column of the file CCC_CON.
  • prints out the second column of arch_table_list.txt, followed by the second column of the file ccc_con
  • prints out the third column of arch_table_list.txt, followed by the third column of the file "0"

That seems a bit crazy.