tech and other interesting stuff
I was doing my initial “is it working?” tests after reinstalling mpc, and mpc ls was not giving me any output. ncmpc was also showing no files. What I didn’t appreciate was that the music database is no populated by default- you have to issue an “update” command manually (or semi-manually by running a client […]
Continue ReadingThere are a number of ways of showing the progress of a dd copy. The easiest is sending the USER1 signal to the dd process, like: dd if=FILE1 of=FILE2 pkill -USER1 dd But that only gives a current status – eg 12345678 bytes transferred (11.77MB) … [8.56MB/s]. Not that helpful if you want an ongoing […]
Continue ReadingThis 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 […]
Continue Reading(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 […]
Continue ReadingAnother useful tip I’m sure most people will be familiar with, but in bash scripts $# stores the number of arguments passed to the script. Eg, combine with $@ (all arguments) for batch processing (what I used it for): foreach $arg in $@; do [stuff] [compare with $# to tell remaining items] done Very basic […]
Continue ReadingA short and easy trick, but one that is either not referred to or more complex examples given. I wanted to change a bunch of upper case .JPG images to lower case. Rather than writing a bash script or some such, I just used the ‘rename’ command: rename ‘s/\.JPG$/\.jpg/’ *.JPG It may depend on perl […]
Continue ReadingSo I’m suppose to be revising for the Big Testâ„¢ that I’ve got tomorrow, but instead I decided to reboot in Ubuntu. And by gosh, I’d forgotten how nice it looks. And this is still the 7.04 version! Sounds are nice too – it’s probably just subjective perception, but playing music sounds nicer too, although […]
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