CODEWITHSUNDEEP
node.jsbashnpmbatch-processingqr-code
paulobunga
paulobunga

Reputation: 385

Generate batch QR Codes with node and npm qrcode package

How can I write a script to convert names in a CSV file into QRCODES.

I have a CSV file called names.csv with 5000 names. I have also installed qrcode package In the folder where the csv file is I ran from bash

qrcode "John Doe" john_doe.png

That created a qrcode for John Doe.

Now I need to create 5000 more qrcodes from the CSV. I have definately no Idea, how to go about that.

I also tried running 

qrcode names.csv names.png

But That created just 1 qrcode image.

Upvotes: 1

Views: 1083

Answers (2)

py9
py9

Reputation: 626

Something like this?

#!/bin/bash

IFS=$'\n'; 
for name in $(cat names.csv); do 
  qrcode "$name" $(echo $name | tr ' ' '_').png;
done

IFS=$'\n' - takes new line as delimiter. Since you will have white spaces in lines, you want to set is as new line to properly run it through the loop.

tr ' ' '_' - this actually sets the output for the image name. We replace the space between the First name and the Last name into a underscore _

Upvotes: 2

sjnarv
sjnarv

Reputation: 2384

Another version - limits the use of command substitution:

#!/bin/bash

set -e

while IFS= read -r name; do
  file=${name/ /_}.png
  qrcode "$name" "$file"
done < names.csv

Assumes that the file names.csv only has one "field" - each full line is a name. Also, using set -e means that the script exits if any qrcode invocation fails.

Upvotes: 0

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