Answer is added for challenge called 'Lonely Integer - Bash!'.

Author: xChivalrouSx

linux-shell/00064_HackerrankLinuxShell.sh

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+# Lonely Integer - Bash!
+# https://www.hackerrank.com/challenges/lonely-integer-2/problem?isFullScreen=true
+
+read 
+tr ' ' '\n' | sort | uniq -u