fix little bugs

bin/info-cert.sh

@@ -156,7 +156,10 @@ main(){
     while [[ "$#" -gt 0 ]]; do
         case "$1" in
             -a|--all)
-                certList=($CERTS_PATH/*.crt)
+                # set - if no .crt → files=() (empty)
+                shopt -s nullglob
+                certList=("$CERTS_PATH"/*.crt)
+                shopt -u nullglob
                 cert_info
                 shift
             ;;
@@ -180,6 +183,9 @@ main(){
                 # check if nbr days is numeric and > 1 and < $DAYS
                 elif [[ "$2" =~ ^[0-9]+$ ]] && [ "$2" -ge 1 ] && [ "$2" -le "$DAYS" ]; then
                     expired_date $2   
+                    if [ "${#expireDate[@]}" == "0" ]; then
+                        msg_warn "There are no certificates that expire in less than $2 days." 
+                    fi              
                     for certData in "${expireDate[@]}"; do
                         daysLeft=$(echo $certData | cut -d"|" -f1 )
                         cn=$(echo $certData | cut -d"|" -f2 )

bin/renew-cert.sh

@@ -99,6 +99,9 @@ main(){
                         exit 1
                     fi 
                     expired_date $2
+                    if [ "${#expireDate[@]}" == "0" ]; then
+                        msg_warn "There are no certificates that expire in less than $2 days." 
+                    fi
                     for certData in "${expireDate[@]}"; do
                         COMMON_NAME=$(echo $certData | cut -d"|" -f2 )