Bash command not found error

Question

Why would the following script give following errors :

./check1.sh: line 10: Hi,: command not found  
./check1.sh: line 21: syntax error: unexpected end of file

check1.sh:

#!/bin/bash


subj="host `hostname`"
healthcheckstatus=$(curl -s -o /dev/null -w '%{http_code}' http://localhost)

body="Hi, Application is up"
body1="Hi, Application is down"

mailbody=$([ "$applicationstatus" == 200 ] && $body || $body1)


if [ $healthcheckstatus != "200" ]
then
mail -s "$subj" me@domain.com <<EOS
`echo -e $mailbody`
EOS
fi
echo "email subject ::$subj"
echo "email body ::$mailbody"

Answer 1

The line assigning mailbody is wrong. You're calling the contents of $body and/or $body1 as a shell command line.

Replace

mailbody=$([ "$applicationstatus" == 200 ] && $body || $body1)

With

[ "$applicationstatus" = 200 ] && mailbody="$body" || mailbody="$body1"