Posts Tagged ‘linux’

Scrollback / Terminal History in screen or byobu

This is another case of “should have read the manual”, but there are ways to see previous output in both screen and byobu. In screen: ctrl + a + [ In byobu: F7 These key combinations cause screen/byobu to enter copy mode, where you can navigate using vi keys, can set marks for copying using […]

Plex Media Server Warning ‘Not Found’ Errors (Fixed)

The media browser on my LG TV has been acting up recently. Instead of listing the categories set up in Plex it pops up a dialog saying “Warning: Not Found”. It does this despite being able to see the Plex Media Server (going to ‘bowse sources’ or similar brings up the server’s name but selecting […]

Auto Draft

ScribeFire’s Arrow Keys Don’t Work

This post is composed within ScribeFire, the blogging extension thing for Frirefox (et al). And I can’t edit posts easily because using the arrow keys causes a blank javascript:; to fire. Bloody useless. Searching for solutions gets a lot of complaints (eg this chap), but not much at the root of the matter. A workaround […]

Limit the Rate of SCP

I was using scp to upload some files (as you should!) and maxing out my connection while doing it. It made using ssh problematic! Fortunately there’s an easy switch to use to limit the rate: scp -l 1024 /file1 user@host:/file2 The -l switch limits scp to the specified upload rate in kilobits per second. Handy!

Fix for “Current Password No Longer Matches Keyring”

A I may have mentioned, I recently reinstalled Ubuntu (had been using Windows 7 for a few months). Since the reinstall I had changed my common login password for the other computers on the network so of course I updated my user password for the new install. The slight problem came when I used any […]

[Solved] sshd Does Not Run At System Startup (Ubuntu)

Problem: sshd does not appear to start on system boot, but runs fine when started from a terminal with /etc/init.d/ssh start Update Dec 2010: Thanks to Jeremie here. Change the following in /etc/init.d./ssh to stop sshd starting before the network is ready: Change: # Required-Start: $remote_fs $syslog to: # Required-Start: $remote_fs $syslog $network Merci Jeremie! […]

Extract A Single Image From A Video Using FFMPEG

Dead handy, this: ffmpeg -ss 0.5 -i inputfile.mp4 -t 1 -s 480×300 -f image2 imagefile.jpg The various options: -t 1: limit to 1 frame extracted -ss 0.5: point of movie to extract from (ie seek to 0.5 seconds) -s 480×300: frame size of image to output (image resized to fit dimensions) -f image2: forces format […]

Connect to a WPA/WPA2 Secured Network In Linux

This turned out to be dead easy, although it took a bit of futzing around due to my own slowness. The situation arose during an a failed upgrade of my dad’s machine to Ubuntu 10.04 (aka Lucid Lynx). I’m sensing a pattern here; I don’t think there has been an upgrade that has gone smoothly […]

Ubuntu 9.10 Karmic Upgrade Problem Fixed (mountall/init)

(Jump to the bonus section on sorting a removed Gnome panel) I finally got round to doing the Jaunty->Karmic upgrade on a troublesome machine. Well, re-doing. I made an abortive attempt to install it on this particular exhibit of electronic arthritis back before I left for Barcelona, which ended in me reinstalling 9.04. Anyway, for […]