August 2017 - luv-main

Auto-remove
by stripes theotoky 23 Aug '17

23 Aug '17

I use aptitude as a package manager. I'm running out of disk space. aptitude doesn't show anything needing to be removed. apt-get -s auto-remove shows just about every package in this range and offers to remove them linux-image-4.4.0-10-generic to linux-image-4.4.0-89-generic linux-headers-4.4.0-10-generic to inux-headers-4.4.0-89-generic In total there is 146 files (about 2GB) that apt-get would delete. An attempt to remove with aptitude shows nothing to remove sudo aptitude -s -oAptitude::Delete-Unused=1 install Check with aptitude as to why they are installed and all of them gives the same answer. aptitude why linux-image-4.4.0-15-generic i A linux-image-4.4.0-15-generic Provides zfs-dkms So is it safe to get rid of these files with apt-get auto-remove or will it mess up aptitude? -- Stripes Theotoky -37 .713869 145.050562

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ethernet port set up for an 4G router
by zlinew9＠virginbroadband.com.au 22 Aug '17

22 Aug '17

I am in something of a bind my normal internet access i no longer with us as the 2G mobile network has been tuned off and although I have many years experience on Linux, little of this has been with the network config as (almost) always works "out of the box". The current situation is a have a Dlink 4G modem router, this has an IP address of 192.168.0.1. This is to be connected to my fire wall machine (currently running Debian 7) via a cat 5 cable to eth0. This machine has a 2 ethernet port motherboard, the second port eth1 will be connected to a (I think) switch which has my other 4 machines connect to it. The IP address range is currently 92.168.1.1 (gateway) upwards with 6 address's in use. How is the firewall ports configured, is there a decent explantion on the net (remember I know little about the low level nuts and bolts but would like to find out. I assume the 2 ports on the firewall machine will use 2 different IP address, is there any logic in there allocation, I also assume the default route for this machine will be eth0 (the port connected to the 4G modem router. In Debian in the /etc/network/interfaces file how is the default route determined. Help, will be GREATLY appeciated. Trying to get new internet access for when the 2G network was gone has been a real struggle. At this location only 2 options are availible, NBN satelite and 4G mobile broadband, unfortunately there is little information anywhere on how to configure either of them for linux. I tried satelite NBN but could not get ANY kind of reliable connection. A 4G dongle will work on linux but I could find NO config information at all and it appears plenty have tried and failed. THe current solution has been adopted as it only means setting up ethernet ports and doing bit of routing. Lindsay

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cat 5 patch panel
by Paul van den Bergen 21 Aug '17

21 Aug '17

Hi Folks, hard rubbish season here - in my cull, I noticed I still had an old 24 port cat 5 19" 1RU patch panel - anyone want it? It probably works.... -- Dr Paul van den Bergen

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CUPS and printing issues
by Mark Trickett 19 Aug '17

19 Aug '17

Hello All, This has a tie in to networking, but start with CUPS. I have a HP LJ 4+, and it works well, and I have done a lot of printing to it from a system with a printer port. Now I am using an Acer TravelMate without a printer port. I have a USB to parallel port adapter, and it has worked, once. Now I just get one blank page, so there is communication, of sorts. I do not know whether there are problems with the adapter, or with the CUPS setup. At the moment, I do not know where to start looking, and quite what the configuration should be like. It is an out of date install of Debian 7, with issues about quotas and the like meaning I am not upgrading quite yet, but I am keeping it up to date as best I can, that does fit within the quota. I do have other printers, a Canon LPB5050N that uses a proprietary filter and setup with CUPS that also needs sorting, whether networked or USB. There are also a couple of Brother colour lasers that I can pull out and try with, but again, I need to sort out CUPS. There are "issues" about setting the printers up networked, I want to use wired ethernet, not wi-fi, but Network manager sets the wired ethernet as the default route, when it has to be the wi-fi. I need the wi-fi as the default connection as that is how I connect to the Telstra Netgear AirCard, and not yet conversant with connecting manually from the command line. I do have a network card in the HP LJ 4+, the Canon LPB 5050N also has an ethernet port, and the Brother printers will do wired ethernet, but still the need to do the default route through the wireless modem. I will be looking to get a cradle for the modem, and that can provide a wired ethernet port, but will still want to not connect the printers in a way that exposes them to the Internet. If you know of problems or issues with CUPS 1.5.3, or other comments and suggestions, please let me know. Regards, Mark Trickett

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Linux LAN Party
by Russell Coker 18 Aug '17

18 Aug '17

I'd like to host a Linux LAN party. I have a CBD location we can use on a weekend, it's good for public transport access and if we have it on a Sunday there is some free parking in the area. There is free coffee and hot chocolate and a fridge for anyone who wants to bring soda. Free Wifi and I can setup NAT on my laptop to provide LAN access. Ordering pizza delivery should be possible. Contact me off-list if you are interested. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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Compose::Melbourne Functional Programming Conference coming up, 28-29 August 2017
by Les Kitchen 17 Aug '17

17 Aug '17

Dear fellow LUV members, Compose::Melbourne is running again this year, coming up in just over a week: http://www.composeconference.org/ It's a two-day event, aimed at building and supporting the functional-programming community in Melbourne. So if you're at all interested in functional programming, newbie or expert, come along and learn and meet people sharing that interest. I know this is not Linux-specific, but most of the main functional-programming systems are FOSS (and Linux-friendly), and functional programming is being increasingly adopted in industry. See for example, Katie Miller's talk at linuxconfau last year: https://www.youtube.com/watch?v=mlTO510zO78 So I figured it might be of interest to LUV members, in much the same way as PyConAU. Day One, Monday 28 August, is the conference, with about a dozen presentations on functional programming (FP) through the day, including keynote by Andrew Sorensen, "Sound Synthesis in the Computational Crucible". Day Two, Tuesday 29 August, is the "unconference": an informal day of getting together to share FP ideas and experience, although we will be running a few workshops and sessions, including an Introductory Haskell workshop for beginners. Day Two, the unconference, is a free event. No need to register, although it'd be a good idea to register for the Introductory Haskell workshop if you plan to attend that, since we expect it to be popular. And for that you'll need to bring a laptop with haskell-stack already installed. (If you run into trouble installing haskell-stack, we can help you on the day.) Day One, the conference, requires paid registration, $58.56 concession, $173.51 full price. We really want to help build the diversity of the FP community, so we have some free tickets available as well. Please contact the Compose::Melbourne committee on composemel-admin(a)googlegroups.com for details. Most information is on the website, but you're welcome to get in touch with me if you have any questions, via ljk+compose(a)ljk.id.au. — Smiles, Les (also Compose::Melbourne committee member).

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Anyone with unpaper experience?
by Mark Trickett 15 Aug '17

15 Aug '17

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Scanning and OCR
by Mark Trickett 13 Aug '17

13 Aug '17

Hello All, I have been scanning with "scanimage" and rotating with "convert" with a degree of success. From this I deduce that the "native" orientation of the scan is that it starts from the top, while I have tended to scan the other way. I have googled about scanning, and bothered to install "unpaper" and "tesseract-ocr". I am having a bit of trouble sorting out the l, t, x and y parameters, where they offset from and the like. I will manually initiate each scan as there is no auto feed, which would not be applicable with a magazine or book anyway, so can increment a number in the filename, although some good explanation of doing so would be appreciated. There are also a host of things with unpaper, and should someone have pointers and tips, that would be appreciated. I will then try feeding through tesseract, and any experience there would also be appreciated. If you are scanning with other software, with good results, please also comment on what you use, and why you made the choice. Regards, Mark Trickett

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migration
by Russell Coker 12 Aug '17

12 Aug '17

I've just migrated the LUV VM to a new server. The new system has 48G of RAM and SSD storage. The LUV VM now has 4G of RAM (up from 2200M) and the SSD will improve performance too. Currently while waiting for DNS changes to propagate I have the old VM forwarding connections on ports 80 and 443. Currently we have some performance problems with the Drupal site https://luv.asn.au/ I think that this is partly due to forwarding connections and Drupal needing lots of connections for images, so I won't be too concerned unless it continues after a few hours when people start getting the new IP addresses. But if any Drupal experts would like to look into this I'd appreciate it. Some mail to the lists will be delayed while MTAs cache the old IP addresses. I don't consider this a problem, email is not IM. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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Test message
by zlinw＠mcmedia.com.au 08 Aug '17

08 Aug '17

For some reason I have not been able to post to luv from my email for some considerable time (years), just checking to see if this still exists. Note: I can receive apparently no problems. LIndsay

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