chatgpt 01 generated script to look for failed nvme devices. The prompt was: `Write a bash script which loops over all nvme devices installed in a system and runs the smart-log subcommand and reports any device which has a critical_warning other than 0.`

nvme-smart-check.sh

#!/usr/bin/env bash
#
# nvme-smart-check.sh
#
# This script lists all NVMe devices on the system, runs 'nvme smart-log'
# on each, and reports any device whose 'critical_warning' is non-zero.
#

# Exit on any error (optional; remove 'set -e' if you prefer to continue on errors)
set -e

ret=0

# Iterate over all NVMe devices found by 'nvme list'
for dev in $(nvme list | awk '/^\/dev\/nvme[0-9]/ { print $1 }'); do
    # Extract the critical_warning value from 'nvme smart-log' output.
    # The line should look like: "critical_warning   : 0x00" or similar.
    # We capture that and store in 'cw'.
    cw=$(nvme smart-log "$dev" 2>/dev/null \
            | awk '/critical_warning/ {print $3}' \
            | tr -d '[:space:]')

    # Convert hex (e.g. 0x01) or decimal to an integer for comparison:
    # This $(( )) shell expansion can handle 0xNN syntax correctly.
    cw_val=$(( cw ))

    # If critical_warning is non-zero, report the device.
    if [[ $cw_val -ne 0 ]]; then
        echo "WARNING: Device $dev has a critical warning (critical_warning=$cw)."
	((ret++))
    fi
done

exit $ret