tail -f /var/log/escenic/engine1-catalina.out > /tmp/threaddumps.log & for i in $(seq 1 10); do kill -QUIT `cat /var/run/escenic/engine1.pid`; sleep 1; done fg Starts logging Tomcat output to /tmp/threaddumps.log. Triggers 10 JVM thread dumps, spaced 1 second apart. Brings the logging process back to the foreground so you can…
for filename in *.jpg; do newname=echo $filename | sed ‘s/xxx/yyy/g’; mv $filename $newname; done
cat ~/.ssh/id_rsa.pub | ssh USER@HOST "mkdir -p ~/.ssh && cat >> ~/.ssh/authorized_keys"
Let’s say you have a raspberry running at home and you want to access it from your office. If you have a google router you can easily set up IPv4 port forwarding 2222 -> 22 At this point from the office you can ssh -p…
Let’s say you need to run a process like a lightweight private npm proxy registry such as Verdaccio and you do not want to use a Docker container. You can run a simple command as noup verdaccio & . It might happen that the process…
echo "bla bla word word1 = string1 string2" | sed -e 's/.* \([^ ]*\)=.*/\1/g' Some basic regexp hints: the first /…/ is what your string should match s means substitute/replace the last /…/ is the replacement g means global, replace all occurrences a . will…
A very philosophical question, this one. I see modern those languages that were not there a couple/few years ago. Definitely java is seen as the older, more enterprisey technology. I don’t think many startups in silicon valley use it, they use more php (facebook), python,…
I came across to a great HTML Presentation Framework: reveal.js, which is a framework used to create stunning presentations using either a visual editor or simple text. https://github.com/hakimel/reveal.js/ Its create flexibility allows me to create my slides using Markdown https://help.github.com/articles/markdown-basics and convert everything by using…