Find out installed EPEL RPM packages

yum list installed | grep @epel

Global Subversion Settings for CA Certificates

How to avoid

Error validating server certificate for 'https://host.example.com:443':

when doing

svn co https://svn.example.com/project/trun

in a system-wide manner:

wget -O /etc/ssl/certs/your_cer.pem https://example.com/your_cert.pem
mkdir /etc/subversion
cat <<EOF > /etc/subversion/servers
[global]
ssl-authority-files = /etc/ssl/certs/your_cer.pem
EOF

Change Oracle User Password

$ su - oracle
$ sqlplus / as sysdba
SQL> alter user USER identified by "PASSWORD";