I want to export the results of a Prodigy tagging session through the command db-out. Prodigy is installed in a Google Compute Engine VM, however I am not the owner of it and for that reason, what I am attempting, looks like this:

# Assume `test1` exists
DB_NAME="test1"
#  `super_user` is Prodigy owner's home directory.
sudo runuser -l super_user -c 'python3 -m prodigy db-out "$DB_NAME" > ./"$DB_NAME".jsonl'

The previous commands should generate a test1.jsonl file, which should be found at super_user home directory; however, no test1.jsonl is generated. BTW, when those lines are run, no warning or error is displayed.

Nevertheless, when I directly run the following command:

sudo runuser -l super_user -c 'python3 -m prodigy db-out test1 > ./test1.jsonl'

test1.jsonl file is correctly generated, as expected and explained before. Why?

Additional notes / updates:

1. There is no need into explaining what that runuser or db-out commands are doing. I think the error is more related with a (possibly?) wrong variable sustitution from my side, that I am not seeing right now.

CodePudding user response：

The variable your are trying to replace by its value is actually replaced by the content of DB_NAME on the machine where your execute

sudo runuser -l super_user -c ...

In other words, in your machine.

• If this is what you want, then it means that the variable DB_NAME is empty on your machine.
• If what you want is to use the DB_NAME variable that is declared on the remote host, then to make sure that it will not be replaced by DB_NAME of your local host, you have to replace double quotes by simple quotes.

Just like this:

sudo runuser -l super_user -c 'python3 -m prodigy db-out \'$DB_NAME\' > ./\'$DB_NAME\'.jsonl'

By doing this, the command "python xxx..." Would be sent on the remote host, exactly as it is written here. And once executed there, the variable DB_NAME will be replaced by its remote value.

Here I used "" before the simple quotes to not interfere with the simple quotes of the whole python command.

Bguess

CodePudding user response：

After addressing my attention to this post (which was kindly suggested by Gordon Davidson, and whose revision is highly suggested), I managed to solve my original issue. The corrected code looks like follows:

DB_NAME="test1"
sudo runuser -l super_user -c "python3 -m prodigy db-out $DB_NAME > ./$DB_NAME.jsonl"

Just to make changes clear, they are:

1. The single quotation marks were replaced by double ones.
2. The inner double quotation marks were discarded.

Afterwards, the script works as it is supposed to be. If I understand this post correctly, there could be some other valid answers; however this one works for now.

Thank you.