HOW TO : Query varnishlogs to show backend server
Command parameters for varnishlog to view the backend server that is processing the request. In this particular case, I wanted to see the request URL and...
HOW TO : Check websockets using curl
Found this good article by Mark Huot regarding using curl to check websocket servers at http://www.thenerdary.net/post/24889968081/debugging-websockets-with-curl curl -i -N -H “Connection: Upgrade” -H “Upgrade: websocket” -H “Host:...
HOW TO : Capture ftp passwords using tcpdump
On a server that is running either the FTP client on server, you can capture the ftp password using tcpdump by tcpdump -A port ftp
Overheard : LASER stands for
I learned today that “laser” is an acronym that stands for light … amplification by … stimulated … emission of … radiation. Who knew? 🙂 https://en.wikipedia.org/wiki/Laser
HOW TO : Search for multiple words in a string using grep
Just for my records grep “WORD\|ANOTHER\|NEITHER” string searches for either “WORD” or “ANOTHER” or “NEITHER” in string.
HOW TO : Search which package contains a filename
If you are using a Linux system that uses yum for package management (like Fedora, Centos, RHEL), you can use the following command to find out...