This is my bash program, just head a file with list of hosts in a cluster and ssh to it.

$myCLUSTERDIR=~/pg/myclusters

function goto() {
150     #######
151     ###### basic structure: set the DIR
152     echo 'Ssh to the first host in a cluster'
153     local gotoHost
154     if [ -z $1 ]; then
155         echo 'Must specify a cluster name'
156         echo 'Usage: gotoHost cluster_name'
157         return
158     fi
159
160     ## get the code
161     gotoHost="$(head -n 1 $myCLUSTERDIR/$1)"
162
163     ssh $gotoHost
164 }

but when i run 'goto generic_prod', it generate errors (i set -x)
   $ goto generic_prod
+ goto generic_prod
+ echo 'Ssh to the first host in a cluster'
Ssh to the first host in a cluster
+ local gotoHost
+ '[' -z generic_prod ']'
++ head -n 1 /Users/xyz/pg/myclusters/generic_prod
+ gotoHost=$'10-64-149-130-uswest1bprod.xyz.com\r'
+ ssh $'10-64-149-130-uswest1bprod.xyz.com\r'
: nodename nor servname provided, or not knownuswest1bprod.xyz.com

the ssh line is weird to me.