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Archive for the ‘Power User’ Category

OpenSuSE Tumbleweed: after installing from ISO, be sure to disable/remove the ISO repo

Posted by jpluimers on 2016/10/26

TL;DR: OpenSuSE Tumbleweed – after installing from ISO, be sure to disable/remove the ISO repo.

A while ago I had a weird thing on my OpenSuSE Tumbleweed system while upgrading (yes, zypper dist-upgrade is the recommended way to update Tumbleweed): it would complain in this way zypper dup indicates python3-urllib3-1.16-1.1.noarch requires python(abi) = 3.5:

# zypper dup
Warning: You are about to do a distribution upgrade with all enabled repositories. Make sure these repositories are compatible before you continue. See 'man zypper' for more information about this command.
Loading repository data...
Reading installed packages...
Computing distribution upgrade...

Problem: python3-urllib3-1.16-1.1.noarch requires python(abi) = 3.5, but this requirement cannot be provided
 Solution 1: Following actions will be done:
  deinstallation of python3-urllib3-1.15.1-2.1.noarch
  deinstallation of python3-wheel-0.29.0-2.1.noarch
  deinstallation of speedtest-cli-0.3.2-4.3.noarch
  deinstallation of python3-six-1.10.0-4.1.noarch
  deinstallation of python3-pycparser-2.14-2.1.noarch
  deinstallation of python3-pyasn1-0.1.9-2.1.noarch
  deinstallation of python3-pyOpenSSL-16.0.0-3.1.noarch
  deinstallation of python3-idna-2.1-1.1.noarch
  deinstallation of python3-chardet-2.3.0-1.4.noarch
 Solution 2: keep obsolete python-cupshelpers-1.5.7-7.2.noarch
 Solution 3: break python3-urllib3-1.16-1.1.noarch by ignoring some of its dependencies

Choose from above solutions by number or cancel [1/2/3/c] (c): 

What eventually – with help from the excellent help by DimStar on the #openSUSE-factory IRC channel – led to the solution was the part Solution 2: keep obsolete python-cupshelpers-1.5.7-7.2.noarch.

But first let’s look at the installed versions and repos:

Read the rest of this entry »

Posted in *nix, Development, Linux, openSuSE, Power User, Scripting, Software Development, SuSE Linux, Tumbleweed | Leave a Comment »

How to copy files from one machine to another using ssh – Unix & Linux Stack Exchange

Posted by jpluimers on 2016/10/25

I’m using Linux (centos) machine, I already connected to the other system using ssh. Now my question is how can I copy files from one system to another system?

Source: How to copy files from one machine to another using ssh – Unix & Linux Stack Exchange

Nice question, uh? In my opinion the best answer is “Use scp to avoid going through hoops with complex configurations to re-use your existing ssh connection” like this:

To copy a file from B to A while logged into B:

    scp /path/to/file username@a:/path/to/destination

To copy a file from B to A while logged into A:

    scp username@b:/path/to/file /path/to/destination

Source: DopeGhoti answering How to copy files from one machine to another using ssh – Unix & Linux Stack Exchange

Instead the question is marked duplicate of SSH easily copy file to local system – Unix & Linux Stack Exchange where (contrary to the ‘easily’ part of the question) go through hoops and loops with all kinds of fancy ssh settings and port forwards.


Posted in *nix, *nix-tools, bash, Communications Development, Development, Internet protocol suite, Power User, Scripting, Software Development, SSH, TCP | Leave a Comment »

I don’t have #IoT. I have #LoT. LAN of things. 

Posted by jpluimers on 2016/10/24

Interesting thought:

I don’t have #IoT. I have #LoT. LAN of things. My gadgets have no default gateway and cannot talk to the internet. Simple. Now I’m hoping for broad supp… – Jan Wildeboer – Google+

Devices in a separate LAN (or VLAN) with no default gateway and some firewall rules to access them from your regular LAN and update them through FWUPD an open source firmware update.

Sounds like a dream? We should all make it come true!

Read I don’t have #IoT. I have #LoT. LAN of things. for more ideas.


Posted in IoT Internet of Things, Network-and-equipment, Power User | Leave a Comment »

Some links on converting non KVM VMs to Proxmox

Posted by jpluimers on 2016/10/24

Gut feeling indicates I need these someday:

From VHD to Proxmox you need to convert to RAW not IMG:

# qemu-img convert -f vpc -O raw PATH/to/DISK.vhd PATH/to/DISK.raw


Posted in Power User, Proxmox, Virtualization | Leave a Comment »

List of “Plain Text Offenders”; hopefully someone publishes a list of https offenders too

Posted by jpluimers on 2016/10/24

This Plain Text Offenders site lists email screenshots of organisations sending back plain-text passwords they kept on file (According to Robert Love, Idera/Embarcadero should be on the list as well).

It is one of the most horrible things that can be done for a password.

Business and IT do many horrible things, so I really hope someone will start a similar site about SSL Labs F-rated domains. The ones that are so broken that they degraded their https to virtually plain-text http quality.

In the past, a notorious example of this was Embarcadero, who in the past managed to get F-rating or had wrong configurations on the below domains, therefore preventing me from logging in and getting new products from them (which is far worse than them not cleaning up their bug database):

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Posted in Hashing, https, OpenSSL, Power User, Public Key Cryptography, Security, Signing | 1 Comment »

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