new shellcheck fix

Author: kpedro88

copy_certificates

@@ -4,7 +4,7 @@ proxy_exists(){
     echo "Check for certificates in $HOME/.globus"
     echo "..."
     if [ -d "$HOME/.globus" ]; then
-        if [ -a "$HOME/.globus/usercert.pem" ] && [ -a "$HOME/.globus/userkey.pem" ]; then
+        if [ -e "$HOME/.globus/usercert.pem" ] && [ -e "$HOME/.globus/userkey.pem" ]; then
             echo "Certificates exist. Doing nothing."
             return 0
         fi

install_certificate

@@ -6,10 +6,10 @@ proxy_exists(){
         if [ "$1" != "N" ] && [ "$1" != "Y" ]; then
 			echo -e "\tUnknown option \"$1\". You must specify [Y/N] to delete or keep any existing .pem files."
 			return 0
-		elif [ -a "$HOME/.globus/usercert.pem" ] && [ -a "$HOME/.globus/userkey.pem" ] && [ "$1" == "N" ]; then
+		elif [ -e "$HOME/.globus/usercert.pem" ] && [ -e "$HOME/.globus/userkey.pem" ] && [ "$1" == "N" ]; then
             echo -e "\tCertificates exist. Doing nothing."
             return 0
-        elif [ -a "$HOME/.globus/usercert.pem" ] && [ -a "$HOME/.globus/userkey.pem" ] && [ "$1" == "Y" ]; then
+        elif [ -e "$HOME/.globus/usercert.pem" ] && [ -e "$HOME/.globus/userkey.pem" ] && [ "$1" == "Y" ]; then
 			echo -e "\tCertificates exist, but removing them in order to replace them."
 			rm -f "$HOME/.globus/usercert.pem"
 			rm -f "$HOME/.globus/userkey.pem"

install_certificate_for_cernsso

@@ -6,10 +6,10 @@ proxy_exists(){
         if [ "$1" != "N" ] && [ "$1" != "Y" ]; then
 			echo -e "\tUnknown option \"$1\". You must specify [Y/N] to delete or keep any existing .pem/.key files."
 			return 0
-		elif [ -a "$2/myCert.pem" ] && [ -a "$2/myCert.key" ] && [ "$1" == "N" ]; then
+		elif [ -e "$2/myCert.pem" ] && [ -e "$2/myCert.key" ] && [ "$1" == "N" ]; then
             echo -e "\tCertificates/keys exist. Doing nothing."
             return 0
-        elif [ -a "$2/myCert.pem" ] && [ -a "$2/myCert.key" ] && [ "$1" == "Y" ]; then
+        elif [ -e "$2/myCert.pem" ] && [ -e "$2/myCert.key" ] && [ "$1" == "Y" ]; then
 			echo -e "\tCertificates/keys exist, but removing them in order to replace them."
 			rm -f "$2/myCert.pem"
 			rm -f "$2/myCert.key"