tcpdump -i eth0 udp 'port 514'
openssl req -new -newkey rsa:2048 -nodes -keyout private.key -out mycsr.csr
openssl req -in mycsr.csr -noout -text
ps -o rss -C httpd | tail -n +2 | (sed 's/^/x+=/'; echo x) | bc
curl https://bintray.com/sbt/rpm/rpm | sudo tee /etc/yum.repos.d/bintray-sbt-rpm.repo sudo yum install sbt
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