DEBIAN/UBUNTU
apt-get install ca-certificates
FEDORA/CENTOS
dnf install ca-certificates.noarch
yum install ca-certificates.noarch
openssl x509 -req -days 365 -in new.csr -signkey ssl.key -out ssl.crt
if CSR is missing:
openssl req -new -key testingcert.key -out new.csr
openssl genrsa -out testingcert.key 2048 (2048 bits RSA private key for encryption and signing)
SSL prievate key:
openssl genrsa -des3 -out www.linux4you.tk.key 1024
SSL CSR:
openssl req -new -key www.linux4you.tk.key -out www.linux4you.tk.csr
Self Signed SSL certificate:
openssl x509 -req -days 365 -in www.linux4you.tk.csr -signkey www.linux4you.tk.key -out www.linux4you.com.crt