bin/duplicate-login-names


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#!/bin/bash

cd "$(dirname "$0")/.."
FILE=${1:-'/etc/passwd'}

DUPLICATES=$(grep -v -E '^#' "$FILE" | awk -F: '{ print $1 }' | sort | uniq -d)
echo $DUPLICATES

if [ -z "$DUPLICATES" ]; then
  exit 0
else
  exit 1
fi