Need help using multiple variables within a line
I have made a script which works fine. But when i include the for loop in my script in give errors. I know that this is an syntax error
./test.sh: line 17: ${test"$i"[0]} ${test"$i"[1]} ${test"$i"[2]} ${test"$i"[3]} ${test"$i"[4]}: bad substitution
Test1 Passed
./test.sh: line 17: ${test"$i"[0]} ${test"$i"[1]} ${test"$i"[2]} ${test"$i"[3]} ${test"$i"[4]}: bad substitution
Test1 Failed
./test.sh: line 17: ${test"$i"[0]} ${test"$i"[1]} ${test"$i"[2]} ${test"$i"[3]} ${test"$i"[4]}: bad substitution
Here is my script
pre_result1=( 12.00 1.28 )
pre_result2=( 2.92 12.00 )
pre_result3=( 2.92 12.00 )
#pre_result3=12
test1=( s 3 3 4 5 )
test2=( p 2 5 7 )
test3=( r 2 5 7 )
for (( i=1; i<=3; i++ ))
do
./testelectronic <<< "${test"$i"[0]} ${test"$i"[1]} ${test"$i"[2]} ${test"$i"[3]} ${test"$i"[4]}" > test"$i".txt
#extracting required lines from file
result1=`head -n 6 test"$i".txt | tail -n 1`
result2=`tail -1 test"$i".txt`
#printing for testing purpose
#echo $result1
#echo $result2
#extracting required values from lines
#compare=result1 | awk '{print $NF}'
echo $result1 | awk '{print $NF}' > result1.txt
echo $result2 | awk '{print $NF}' > result2.txt
val1=0
val2=0
FILENAME="result1.txt"
while read line
do
val1=$line
done < $FILENAME
FILENAME="result2.txt"
while read line
do
val2=$line
done < $FILENAME
#printing for testing purpose
#echo $val1
#echo $val2
if [ "$val1" == "${pre_result1[0]}" ] && [ "$val2" == "${pre_result1[1]}" ]
then
echo "Test1 Passed"
else
echo "Test1 Failed"
fi
done
I Google for this and found an example and i use like this
./testelectronic <<< "${test[$i][0]} ${test[$i][1]} ${test[$i][2]} ${test[$i][3]} ${test[$i][4]}" > test$i.txt
It remove the error but now this line do not take parameters correctly.
Kindly help
Thanks in advance
usmangt
Comments
-
It appears that the issue may be the fact that you are trying to dynamically define the variable names within your script, which is a more complex function. I recommend checking out the post at http://www.humbug.in/2010/bash-tricks-create-variables-dynamically-using-some-eval-magic/ which will point you in the right direction.0
-
Your problem is that you are not correctly quoting.
./testelectronic <<< "${test"$i"[0]} ${test"$i"[1]} ${test"$i"[2]} ${test"$i"[3]} ${test"$i"[4]}" > test"$i".txt
This is just a big mess. Quoting doesn't work as "()" or "{}" do in C or many other languages.
Try with./testelectronic <<< "${test$i[0]}" "${test$i[1]}" "${test$i[2]}" "${test$i[3]}" "${test$i[4]}" > "test$i".txt
The "solution" you found:./testelectronic <<< "${test[$i][0]} ${test[$i][1]} ${test[$i][2]} ${test[$i][3]} ${test[$i][4]}" > test$i.txt
Seems to work but what this is doing is giving "./testelectronic" only one argument (which is what's within the quotes). That's why your line is not taking the parameters correctly.
0 -
If possible eventually you can get into writing php scripts instead bash scripts.
Bash lacks integrity in its language, sometimes it appears too restrictive, and too discrete.
PHP will brings you that integrity, and superior control. And bash scripts in PHP is also a too good choice.0 -
The OP was asking about fixing their bash script, what does PHP have to do with the request?0
-
Kiran your reply doesn't make much sense. What if I say to do this in C because it's faster? come on!
Anyway, I'm wating for the OP to say if the solution worked or not
Regards0 -
Hi,
I have tried the syntax but it still giving me error of bad subsitution.#!/bin/bash pre_result1=( 12.00 1.28 ) pre_result2=( 2.92 12.00 ) pre_result3=( 2.92 12.00 ) test1=( s 3 3 4 5 ) test2=( p 2 5 7 ) test3=( r 2 5 7 ) for i in 1 2 3 do ./testelectronic <<< "${test$i[0]}" "${test$i[1]}" "${test$i[2]}" "${test$i[3]}" "${test$i[4]}" > "test$i".txt result1=`head -n 6 test"$i".txt | tail -n 1` result2=`tail -1 test"$i".txt` echo $result1 | awk '{print $NF}' > result1.txt echo $result2 | awk '{print $NF}' > result2.txt val1=0 val2=0 FILENAME="result1.txt" while read line do val1=$line done < $FILENAME FILENAME="result2.txt" while read line do val2=$line done < $FILENAME if [ "$val1" == "${pre_result$i[0]}" ] && [ "$val2" == "${pre_result$i[1]}" ] then echo "Test$i Passed" else echo "Test$i Failed" fi done
Thank you
usmangt0
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