FOSSTECH Notes

I always enjoy performing search and replace using sed command when I need to edit the same thing over multiple files. Usually the syntax that I use is as follow: sed -i 's/search/replacement/' *.txt This will replace all the word "search" with "replacement" in all files that ended with txt.  But what if you want to replace the word "search" with "replace/ment". You just need to do minor adjustment as follow: sed -i "s|search|replace/ment|" *.txt Usually I omit the "-i" first to see the changes on the screen to make sure that the text are replaced properly before adding "-i" to perform the actual changes.  Until next time!!!  📚 Want to Learn Docker? I wrote "Levelling Up with Docker: A Practical Guide to Containers" — a hands-on guide for Linux admins who want to learn Docker without the fluff. What's inside: Rootless Docker installation (Ubuntu, RHEL, SLES) Container n...

 Recently I saw an application that run on 127.0.0.1 port 8080 on the server that I need to access from my workstation. The easiest way to access this is to use ssh tunneling.  To tunnel remote port to local machine, you can just perform the following: ssh -g -L 9999:localhost:8080 -f -N username@remoteip This will allow your local machine port 9999 to be tunneled to the remote machine application on port 8080 Launch your browser and login to http://localhost:9999 and you will be accessing the application running on the server localhost.    Until next time :)