To install nc aka netcat on Ubuntu, type: Simple enough. I added this entry because I noticed many resources reference only netcat and not nc. I thought this might be of help to someone needing “the nc command” without knowing to search for netcat. Enjoy your day.
Author Archives: Jack
Slow login and su on Centos 7 (not an ssh or dns problem)
I had a particular Centos 8 box that had very slow logins but over ssh but also using su. The issue was not with dns and ssh. I finally found the problem – or at least the fix (related to systemd, sigh): The server was running inside of openvz so perhaps there were resource issues …
Continue reading “Slow login and su on Centos 7 (not an ssh or dns problem)”
Reset Centos 8 root password
reboot the server at grub menu, press up/down to pause auto booting select top menu item, press e (to edit) in editing menu, go to end of line starting with “linux” and add “rd.break” press control-x to boot using this edited grub command line when the server starts you should not have to login at …
Force new videos to show up on Roku Synology share
inside ssh:
Arch Linux virtualbox install on OSX
If your Virtualbox screen is too small, go to preferences and adjust screen scaling to 300% (or your choice). You’ll need to restart any running virtual machine to see the effect of this. largely from : https://itsfoss.com/install-arch-linux/
When mysql won’t start due to innodb errors
Over the years innodb has caused me more trouble than anything else in the LAMP stack. MyISAM tables seem to work and repair without issue. Innodb seem to be endless trouble. Alas, clients need them so I have to make them work. Today a mysql server crashed and wouldn’t restart. A few of the errors: …
Continue reading “When mysql won’t start due to innodb errors”
Fixing promox lockups
My proxmox 6 test install locked up every day or two. Here is the fix. This in particular seems to apply to common hardware on Hetzner servers. In /etc/default/grub, update this line : Reboot and you should find your server stable. Read more on the proxmox forum at https://forum.proxmox.com/threads/random-crashes-reboots-mit-proxmox-ve-6-1-auf-ex62-nvme-hetzner.63597/page-2
Does the Yamaha DX100 send program change commands?
The manual for the DX100 says it sends program changes yet mine refused to do so. Here is how to make the DX100 send program changes. To send program changes you must have “ch info” set to on (as the manual says). What the manual does not mention is that “sys info” must be set …
Continue reading “Does the Yamaha DX100 send program change commands?”
Fixing debug2 messages
If your ssh session inside of gnu screen starts to show messages like : Press, control-a (or your mapped key for this) then v Screen will display: Just press enter. I do not think this is the proper fix but it does fix it. I believe the cause is mistyping another control sequence.
Today’s lesson: Make use of package managers
I needed to distribute, backup and install some files to a large number of servers today. I had wrote most of a small script when I was reminded of a maxim that I often forget: Make use of package managers. Everything my script did a package manager would do much better. The quickest way to …
Continue reading “Today’s lesson: Make use of package managers”