ste_kwr's questions

Before everyone rushes to mark this as a duplicate, I have indeed read the other threads here and here, googled this, and visited the snappy homepage here searching to clear my confusion, and I couldn't. I ask here because I still remain confused. I understand that it is some sort of a minimal working ubuntu, and the spirit of this question is not what is "in it", rather what it is and how it works.

1. What is the snappy approach to applications? The homepage describes some of it's merits, but as a user, how will I get the apps? Do I still sudo apt-get install XXXX? Or something else?

2. Will regular ubuntu applications work if I install snappy (the same thing that works on my normal ubuntu install using apt-get or by downloading a deb package), or does someone need to do something special to make an app work in snappy?

3. Snappy Core is available for Raspberry Pi, for instance, which is a different (mobile) processor, if I install snappy on that, will regular desktop apps still work on Pi? Is that the point of snappy?

4. If the standard approach does not work, how do I get applications, where do I search for what applications are available for snappy, and how do I install them.

Thank you. My questions are formulated to the best of my understanding of how applications work and are installed in Ubuntu, but please edit them to make more sensible if you get what I mean to ask.

Ever since I upgraded to 14.04 I've had problems with my smplayer playback. I thought it might be an upgrade issue and so I fresh-installed the OS and installed smplayer first thing, still the same issue. Below is what the playback looks like, the colors are displaced. Many videos also run far faster than usual. How do I solve this issue? Smplayer was installed using the following commands:

sudo add-apt-repository ppa:rvm/smplayer sudo apt-get update sudo apt-get install smplayer smtube smplayer-themes smplayer-skins

Edit1: More information:

The graphic card is

01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Pitcairn PRO [Radeon HD 7850] (prog-if 00 [VGA controller]) Subsystem: XFX Pine Group Inc. Device 3264

No changes have been made to smplayer, in-fact no commands are run at all other than installing Ubuntu with updates and running the above mentioned commands to install smplayer.

Edit2: Update

I removed and purged smplayer and then installed smplayer2 and the problem persists in smplayer2. I should mention that the problem does not occur in all files, only some. Moreover removing smplayer2 and going back to smplayer causes the problem to be solved for these files, but appear for some other files that rendered properly earlier (displaced colors, same problem), which is very odd.

Thanks.

I would like to know how to properly install, and use texlive along with the package manager tlmgr in Ubuntu. Here is what I did to install texlive:

sudo apt-get install texlive-latex-base texlive-latex-extra texlive-latex-recommended

And now I do have texlive, but the package manager is not working. Following is the error

sudo tlmgr update -all
(running on Debian, switching to user mode!)
cannot setup TLPDB in /home/kniwor/texmf at /usr/bin/tlmgr line 5336.

Is there a better way to install texlive? What can I do to fix the package manager at this point?

I just installed 13.10, and I can't seem to find how set the Unity Panel (launcher) to auto-hide. Can someone direct me to where the option is? A search in the settings shows no results.

A search on askubuntu reveals several threads with hiding issues and how to fix them using tools. But doesn't tell me where I can find the simple auto-hide option to begin with. Does the default installation contain such an option, and if so, where? Do I need to install some tools to get this option? If so, shouldn't such a basic option already be there?

This is a fresh install of Ubuntu 13.10 on a completely wiped clean hard disk. Dual booted with windows 7 (Boths OSs freshly installed). The install is on Ext 4 partition. And my university uses WPA2 Enterprise I believe - PEAP with MSCHAPv2.

Win 7 connects flawlessly and works fine. Ubuntu works flawlessly with the open Guest netowrk of university but not the secured one. It connects fine, and will work for 10-20 seconds but then INTERNET is lost. No ping to www.google.com. However, the network still remains connected. If I disconnect and reconnect to the wifi netowrk again, the internet will work for another 10-15 seconds before being lost. The wifi adapter I believe is "Intel Centrino Ultimate-N 6300". Here is the

 *-network
       description: Wireless interface
       product: Centrino Ultimate-N 6300
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: wlan0
       version: 35
       serial: 00:24:d7:38:97:c4
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=3.11.0-12-generic firmware=9.221.4.1 build 25532 ip=10.101.160.224 latency=0 link=yes multicast=yes wireless=IEEE
802.11abgn
       resources: irq:44 memory:f2000000-f2001fff

I use gvim to edit my tex files and it is the default editor. So I just double click on the tex files to edit them and that opens them with Gvim. However, the working directory for Gvim is always the home directory which is odd since I would expect the working directory to be the one in which the file that I have just double-clicked and opened is present. This causes a lot of inconvenience since I normally want to run commands in that directory in Gvim and I have to manually change it every time. Any suggestions on how I can have Gvim starting in the proper way? Thanks a lot in adcvance.

I have already checked the .gvimrc file and I see nothing suspicious. It just has my font and color settings, that's all.

I'd like to know how I can sync only existing files and directories in the target directory.

For example, if I have in the source:

a\
b\
b.txt
a.txt

... and in the target:

a\
a.txt

Then I would like rsync to update a\ (including all files in it, on the source) and a.txt but ignore copying b\ and b.txt.

The description here says that 12.04 ships with python 3.2.3 as well. What command do I run to get this? Running python -v or python2 -V or python2.7 -V all give me the same result 2.7.3. There are no other commands with the name python available. Do I have to install it?

• https://wiki.ubuntu.com/PrecisePangolin/ReleaseNotes/UbuntuDesktop#PrecisePangolin.2BAC8-ReleaseNotes.2BAC8-CommonInfrastructure.Python_Toolchain

Note: I am not interested in setting python 3.2 as my default interpreter, I just want to know that if it ships, what command runs it.

I would like to know what tools are available to Ubuntu users for monitoring the overclock done in the BIOS and to stress-test the machine. Tools for the following:

1) Tool to reliably read actual clock speeds of the CPU when they are on and off load.

2) Tool to provide bus speeds, RAM speed, graphics core speed etc, in real time.

3) Tool to monitor temperatures.

4) Tool to monitor load on CPU/GPU.

5) Tool to stress test the machine.

Although I want to ask the question with regards to any Ubuntu user with any configuration so that it can be of use to everyone, my configuration is Intel i5 2500k + ASUS P8Z68-V LX, if you must know.

As the title says, I would like to know the difference between a hard link and a soft link created by the command ln. The command man ln does provide information, but does not sufficiently answer my question.

Also, it would be nice if someone could provide a setting where hard link might be preferable over a symbolic link.

I use vim for pretty much all my typing work. I was wondering if there was a feature that would use an offline dictionary and whenever I typed

:def Ubuntu

It would give me the definition of the requested word in a new buffer, or something similar.

I was wondering what use are the workspaces at all, if any. I notice that when I switch to another workspace, all the apps still show in the unity bar and all the icons are still present in the taskbar, and clicking on them takes me to the workspace with those windows. So really, why would I ever care to switch it, and for what purpose? It would have made sense if switching windows completely gave be an empty unity bar where I can start multiple, independent instances of various applications.

I have seen the thread How to add a directory to the PATH?

I already have added the directory in my PATH by directly editing the /etc/environment. However, I do not get the command working when I use it as

$ sudo command --options

However, things work great when I do

# command --options

or

$ command --options

Why is this the case? Also, this is not my full question. I would be thankful if someone could explain the various ways of adding directories to the path, how they work, and when is each of them in effect. How are they different?

The point of the question is not so much to get things working, but to understand how it all works. Pointing to a guide that explains this would be a great answer too.

I want to map my Super+L so that when I press the combination my screen is locked. How do I do that?

Here is the error I get when I am trying to install the updates suggested by the Update Manager in my Ubuntu 11.10. I have not installed and/or removed gnome/KDE/xfce or any other window manager. It is as it was at the time of installation.

Ok, I am using Ubuntu 11.10 and I am unable to find the mount point for my CD/DVD. I inserted a CD in the rom, and I see the files just fine in nautilus, but when I try to run the following command

sudo mount -l

it gives me all the mount points, except one for the CD. I looked in "/mnt/" folder and there are no subfolders. "/media/" folder has a folder name cdrom but is empty and doesn't seem to be mounted. So where exactly is my CD mounted? I also cannot find anything that looks like a CDROM device name in "/dev/".

I need a shortcut, menu entry of some type (not a desktop shortcut) that readily allows me to access a particular file on the disk.

I'm thinking something like when I pin a .txt file to the start menu in windows. Is that possible?

I'm using Ubuntu 11.10.