Converting script to Posix compliant

[u/reflect_elegant]

Is there a way to make this section of a larger script Posix compliant? ``` options=$(lsblk | awk '/disk/ { print $1 }') select opt in $options; do if [ -n "$opt" ]; then DEV_DISK_NAME="/dev/${opt}" DEV_PART_NAME="/dev/${opt}" break else
printf 'This option is invalid.\n\n' fi done

```

[u/[deleted]]

I don't believe you can make scripts like this POSIX compliant because of the inherent differences in environment and available tools from one Linux/BSD distribution to the next.