Monitoring redis access and activity
Use redis-cli to monitor redis access and activity. redis-cli monitor or telnet localhost 6379 When the connection has been made, type MONITOR Use Ctrl+C or send SIGINT to get out …
Linux
Webmin, Virtualmin and APT for Ubuntu and Debian
I often use Webmin and Virtualmin to manage basic stuff on Linux servers, mostly so because others sometime need to change minor settings on these servers, and they may or …
Forcing apt-get to use IPv4
When or if you run into trouble with apt-get and IPv6 connections timing out or not resolving properly at all, it may be a good idea to simply prevent apt-get …
Resizing windows in XFCE / XFWM4
This does not seem to be a problem for everyone nor for every XFCE theme, but sometimes it can be a real drag (no pun intended) to resize the windows …
Using sfdisk to recover a partition table on Linux
As he re-entered the sfdisk dump manually in the remote recovery console, using the devil’s editor (vi), he was silently thanking the Linux developers for not screwing around with the …
Using nmap to “ping” remote ports
nmap -p 443 site.com nmap -p 21,22,2222,80,443 site.com nmap -p 50-100 site.com nmap is a very versatile tool for analyzing remote hosts. Given the above examples, nmap will return the …
Show which process/program is listening to what port using netstat and lsof
lsof -Pnl +M -i4 lsof -Pnl +M -i6 or netstat -tulpn netstat -npl There are obviously a number of ways to accomplish this, but these variations will cover a lot …
Using MTR to create a text file report
mtr –report –report-cycles 20 www.instagram.com > ignetrpt.txt The above should be entered on one line. Using MTR this way makes it easy to simply send a trace report via e-mail. …
Orage clock preferences in XFCE
Ubuntu 18.04.1.LTS, XFCE Line 1: %H:%M, Ubuntu Mono Bold 14 Line 2: %a %d %b, Ubuntu Condensed 11 Tooltip: %A %d %B %Y/%V Set width: 80 [X] Show lines vertically
SSH tunnel to use other mailserver than localhost
Because I have a lot of virtual machines, laptops, work environments, and so on, I never seem to find the time to setup SMTP authentication everywhere. I typically use Linux …