Converts an input file into a JSON array. Each line of the file will become an element in the array.

toJSONArray.sh

#!/bin/bash

DATA_FILE="$1"
OUT_FILE="$DATA_FILE.json"

if [ ! -f "$DATA_FILE" ]; then
    echo "Data file is missing please specify a data file on the command line."
    exit 1
fi

if [ -f "$OUT_FILE" ]; then
    echo "Output file exists at $OUT_FILE remove it and try again."
    exit 1
fi

# Start the array.
touch "$OUT_FILE"
echo "[" >> "$OUT_FILE"

# Add all the data
cat "$DATA_FILE" | sed 's/.*$/&,/' >> "$OUT_FILE"

# Remove the final comma
mv "$OUT_FILE" "$OUT_FILE.temp"
sed '$ s/,$//' "$OUT_FILE.temp" > "$OUT_FILE"
rm "$OUT_FILE.temp"

# Finish the array
echo "]" >> "$OUT_FILE"