The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Mac OS X / OS X / MacOS’ Category

Mac OS X: finding the DNS servers available

Posted by jpluimers on 2016/07/01

DNS and Mac OS X are a bit of a tricky situation as OS X can use more than the default DNS servers: its resolve can do a multi-client DNS search.

The default DNS servers can be listed like this:

scutil --dns | grep 'nameserver\[[0-9]*\]' | sort | uniq

The effective DNS server like this:

dig whoami.akamai.net | grep "^;; SERVER" | cut -c 12-

Sometimes you want to know if you have manually configured DNS servers, or only DHCP assigned ones. This statement shows that for my Wi-Fi network-service:

networksetup -getdnsservers Wi-Fi

Because of the multi-client setup, you need to run this for all network-services configured on your OS X installation. You can get the list like this:

networksetup -listallnetworkservices

I’ve not yet found a way to list only active services, as the networksetup documentation indicates the -listnetworkserviceorder option will mark inactive ones with (*), but it reality does so only for disabled ones. So this does not work:

networksetup -listnetworkserviceorder

I might one day dig into combining the output of ifconfig with networksetup to figure out a shell based solution to this question.

–jeroen

Posted in Apple, Mac OS X / OS X / MacOS, Mac OS X 10.7 Lion, OS X 10.10 Yosemite, OS X 10.8 Mountain Lion, Power User | Leave a Comment »

Woof – simply exchange files – one-time sharing of a file over http

Posted by jpluimers on 2016/06/22

Woof is a small simple stupid webserver that can easily be invoked on a single file. Your partner can access the file with tools he trusts (e.g. wget). No need to enter passwords on keyboards where you don’t know about keyboard sniffers, no need to start a huge lot of infrastructure, just do a

$ woof filenameand

tell the recipient the URL woof spits out. When he got that file, woof will quit and everything is done.And when someone wants to send you a file, woof has a switch to offer itself, so he can get woof and offer a file to you. …

Woof needs Python on a unix’ish operating system. Some people have used it successfully on Windows within the cygwin environment.

Source: Woof – simply exchange files

Works from homebrew on OS X.

via: Web Offer One File – Thomas Mueller (dummzeuch) – Google+

Source: Web Offer One File

–jeroen

Posted in *nix, *nix-tools, Apple, BSD, Home brew / homebrew, Linux, Mac, Mac OS X / OS X / MacOS, Power User | Leave a Comment »

network – How can I release and renew my DHCP lease from Terminal? – Ask Different

Posted by jpluimers on 2016/06/07

Via the answer below I created the renew alias. I already had the first two aliases.

alias route-and-ipaddresses="netstat -nr | grep 'Internet\|Gateway\|default' && echo && ifconfig | grep '\: flags\|inet\|inet6' && echo more detailed info through ifconfig and netstat -nr"

alias whatismyip="curl http://whatismyip.akamai.com && echo"

alias renew_dhcp="sudo ipconfig set en0 DHCP && echo waiting 10 seconds for DHCP lease to be obtained && sleep 10 && route-and-ipaddresses && whatismyip"

–jeroen

via: network – How can I release and renew my DHCP lease from Terminal? – Ask Different.

Posted in Apple, bash, Development, Mac, Mac OS X / OS X / MacOS, Mac OS X 10.6 Snow Leopard, MacBook, MacBook Retina, MacBook-Air, MacBook-Pro, MacMini, OS X 10.10 Yosemite, OS X 10.8 Mountain Lion, OS X 10.9 Mavericks, Power User, Scripting, Software Development | Leave a Comment »

domain name system – How to test DNS glue record? – Server Fault

Posted by jpluimers on 2016/05/26

Thanks Adrian W for providing the below example in your answer about obtaining GLUE record information for a domain.

It is an excellent showcase for the $IFS Internal Field Separator available in any nx shell.

In this case it is used to get the TLD (top-level domain) from the domain name specified at the command-line.

After that, it obtains the name servers for that TLD, and queries the glue records there, both using dig.

Here is a little shell script which implements Alnitak’s answer:

#!/bin/sh
S=${IFS}
IFS=.
for P in $1; do
  TLD=${P}
done
IFS=${S}

echo "TLD: ${TLD}"
DNSLIST=$(dig +short ${TLD}. NS)
for DNS in ${DNSLIST}; do
  echo "Checking ${DNS}"
  dig +norec +nocomments +noquestion +nostats +nocmd @${DNS} $1 NS
done

Pass the name of the domain as parameter:

./checkgluerecords.sh example.org

–jeroen

via domain name system – How to test DNS glue record? – Server Fault.

Posted in *nix, Apple, bash, Development, DNS, Linux, Mac, Mac OS X / OS X / MacOS, Mac OS X 10.4 Tiger, Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion, openSuSE, OS X 10.10 Yosemite, OS X 10.8 Mountain Lion, OS X 10.9 Mavericks, Power User, Scripting, Software Development, SuSE Linux | Leave a Comment »

Mac OS X Time Machine – Stuck on “Preparing Backup”

Posted by jpluimers on 2016/04/25

For one of my USB backup drives, Time Machine was stuck showing “Preparing Backup”.

tmutil (which has a lot of undocumented parameters) helped me out.

tmutil status would not show any change for hours either:

retinambpro1tb:~ root# tmutil status
Backup session status:
{
    BackupPhase = ThinningPreBackup;
    ClientID = "com.apple.backupd";
    DateOfStateChange = "2015-05-04 19:27:31 +0000";
    DestinationID = "01AE12C7-1D3E-469E-BE7E-32DA30F0030E";
    DestinationMountPoint = "/Volumes/Elements2TB1";
    Percent = "-1";
    Running = 1;
    Stopping = 0;
}
...
retinambpro1tb:~ root# tmutil status
Backup session status:
{
    BackupPhase = ThinningPreBackup;
    ClientID = "com.apple.backupd";
    DateOfStateChange = "2015-05-04 21:13:28 +0000";
    DestinationID = "01AE12C7-1D3E-469E-BE7E-32DA30F0030E";
    DestinationMountPoint = "/Volumes/Elements2TB1";
    Percent = "-1";
    Running = 1;
    Stopping = 0;
}

So I:

  1. removed the .inProgress file found by ls -al /Volumes/Elements2TB1/Backups.backupdb/`scutil --get ComputerName`/*.inProgress
  2. rebooted with the USB drive attached
  3. waited for spotlight to complete
  4. manually started a backup
  5. verified it made progress using tmutil (you need to run that as root, for instance with sudo su -)

And it indeed made progress and finished:

Read the rest of this entry »

Posted in *nix, Apple, Mac, Mac OS X / OS X / MacOS, MacBook, MacBook Retina, MacBook-Air, MacBook-Pro, MacMini, OS X 10.8 Mountain Lion, Power User, SpotLight | Leave a Comment »

Tools that Isotopp installed on his Mac…

Posted by jpluimers on 2016/04/01

IRC so: »i> Isotopp: Ich habe jetzt nen Mac als Arbeitsplatzrechner… Was will man als UNIX Hacker zuerst an Tools installieren?«

Source: IRC so: »i> Isotopp: Ich habe jetzt nen Mac als Arbeitsplatzrechner… Was will… by Kristian Köhntopp.

Since G+ is very bad at searching, I created this summary of the tools; read the full G+ post (Google Translate is quite OK), including comments on why.

Edit: 20160402 – I’m posting regular updates based on the comments for that G+ post. I’ve changed or added German iTunes store links to US-English ones.

Read the rest of this entry »

Posted in Apple, Audacity, Audio, Fusion, Hardware, Keybase, Keyboards and Keyboard Shortcuts, KVM keyboard/video/mouse, Mac, Mac OS X / OS X / MacOS, MacBook, MacBook Retina, MacBook-Pro, Media, OS X 10.10 Yosemite, OS X 10.11 El Capitan, Power User, Security, VirtualBox, Virtualization, VMware | Leave a Comment »

OpenVPN – How to connect to Access Server from a Mac – basically says use Tunnelblick

Posted by jpluimers on 2016/03/18

Nice summary for just saying “Use Tunnelblick

This howto article explains how to obtain and setup a Mac openvpn client to connect to the OpenVPN Access Server.

Source: How to connect to Access Server from a Mac

–jeroen

Posted in Apple, Mac, Mac OS X / OS X / MacOS, Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion, MacBook, MacBook Retina, MacBook-Air, MacBook-Pro, MacMini, OpenVPN, OS X 10.11 El Capitan, OS X 10.8 Mountain Lion, OS X 10.9 Mavericks, Power User | Leave a Comment »

some more lsof, netstat and rpcinfo examples

Posted by jpluimers on 2016/03/07

Last friday I updated the examples at *nix networking – lsof: How to tell what process has a specific port open on Linux (via: Server Fault) as I needed to document some of the machines around here (so it becomes easier replacing them).

I also added some links to background information and (when I get to using it: OS X still goes without) a good iproute2 starter page.

–jeroen

Posted in *nix, *nix-tools, Apple, Communications Development, Cygwin, Development, Internet protocol suite, Linux, Mac, Mac OS X / OS X / MacOS, Mac OS X 10.6 Snow Leopard, MacBook, MacBook Retina, MacBook-Air, MacBook-Pro, MacMini, OS X 10.10 Yosemite, OS X 10.8 Mountain Lion, OS X 10.9 Mavericks, Power User, TCP | Leave a Comment »

my ScanSnap ix500 has a box too…

Posted by jpluimers on 2016/03/04

So my ScanSnap ix500 has a box too (actually a Leitz Rotho Profiline 10 Schübe drawer). The ix500 scans double sided and takes like 2 seconds per sheet. Works through WiFi (or USB) on both PC and Mac.

This is the process:

  1. I scan and roughly sort the document by destination in a drawer.
  2. A Windows VM creates OCR PDF and puts them into the cloud.
  3. It gets synced to my Macs, where spotlight indexes them by content.
  4. Once a month I split off the parts for my bookkeeper, file important non bookkeeping stuff and shred the rest.
  5. I name files on a selective base (as spotlight is very good at finding the rest).

This is why I like it over scanning with your mobile phone any time:

My ix500 setup just works.

Now I need to optimise the S510 scanned files. Maybe linux – optimize PDF files (with Ghostscript or other) – Stack Overflow (from the same thread) works.

–jeroen

via: Hey everyone, we are currently preparing the next release.

Posted in Fujitsu ScanSnap, ix500, LifeHacker, Power User, Scanners, SpotLight | Leave a Comment »

Reloop RMX-40 USB – when your Mac doesn’t recognise it.

Posted by jpluimers on 2016/02/29

Reloop has posted the below for DJ controlers (like Contour IE, Jockey 3 ME and Digital Jockey 2 ME), but it also applies to their mixers, for instance my Reloop RMX-40 USB – Reloop (but not limited to Reloop audio equipment) in combination with either of my:

  • MacBook Air (13-inch, Mid 2011)
  • MacBook Pro (Retina, 15-inch, Late 2013)

All these machines have USB 3.0 ports. But the workarounds below work:

Read the rest of this entry »

Posted in Apple, LifeHacker, Mac OS X / OS X / MacOS, MacBook Retina, MacBook-Air, MacBook-Pro, OS X 10.10 Yosemite, OS X 10.8 Mountain Lion, OS X 10.9 Mavericks, Power User | Leave a Comment »