Bash script failing with unknown option due to space in argument

Question

I am trying to run aws create lambda function. It goes as follows -

eval $(aws lambda create-function \
--function-name $FUNCTION_NAME \
--runtime $RUNTIME \
--role $ROLE \
--handler $HANDLER \
--region $REGION \
--zip-file $ZIP_FILE \
--profile $PROFILE \
--environment $env_variables)

All the variables come from command line. It is failing for env_variables. This gets constructed as -

env_variables="Variables={INPUT=${DAYS}}"

where DAYS is actually "20 days"

How can I avoid this space and pass my command successfully.

I need a string like `env_variables="Variables={INPUT=20 days}"` which means `"Variables={INPUT=20 days}"` is a json sting fed to environment option of the command. I tried DAYS="\'45 days\'". Does not work. — Aniket Thakur, Nov 04 '17 at 13:55
Please put that update ^^ ^^ ^^ into your question, where it belongs so that everyone can easily find it. — roaima, Nov 04 '17 at 14:32
I guess it was quotes after all. Took couple of hour to figure correct combinations. — Aniket Thakur, Nov 04 '17 at 14:39

score 1 · Answer 1 · answered Nov 04 '17 at 14:38

Finally following worked -

env_variables="\"Variables\":{\"INPUT\":\"${DAYS}\"}"

lambda_create_command="aws lambda create-function --function-name $FUNCTION_NAME --runtime $RUNTIME --role $ROLE --handler $HANDLER --region $REGION --zip-file $ZIP_FILE --profile $PROFILE --environment '$env_variables'"

echo "Executing command : $lambda_create_command"

eval $lambda_create_command

Important points -

Quotes in env_variables
Use of eval
Single quote in command string i.e $env_variables

Reference - https://gist.github.com/andywirv/f312d561c9702522f6d4ede1fe2750bd

Bash script failing with unknown option due to space in argument

1 Answers1