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

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Archive for the ‘OS X’ Category

Finder doesn’t work since Yosemite – Ask Different

Posted by jpluimers on 2017/02/20

Source: Finder doesn’t work since Yosemite – Ask Different [WayBack]:

This fix from Reddit worked perfectly for me!! [WayBack]

You can most likely fix the issue by clearing out Finder’s saved state, caches, and/or settings.

Use Spotlight (the search icon in the far right of the menu bar) to find and open the “Terminal” application. Triple-click the following line in order to copy and paste it into Terminal’s window:

rm -fR ~/Library/Saved\ Application\ State/ ~/Library/Caches/; killall Finder

If it still doesn’t work, try this one:

mv ~/Library/Preferences/{,.backup}.plist; killall Finder


Read the rest of this entry »

Posted in Power User, Apple, MacBook, MacBook-Pro, MacBook-Air, OS X, Mac, MacBook Retina, OSX Yosemite, MacMini, iMac | Leave a Comment »

Managing WIFI connections using the Mac OSX…

Posted by jpluimers on 2017/02/10

These links:

Made me add this to my ~/.bash_profile:

alias airport="/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport"
alias wifi-off="networksetup -setairportpower en0 off"
alias wifi-on="networksetup -setairportpower en0 on"
alias wifi-scan="airport scan"
alias wifi-join-SSID-password="networksetup -setairportnetwork en0"
alias wifi-list-ports="networksetup -listallhardwareports



Posted in Apple, Mac, MacBook, MacBook Retina, MacBook-Air, MacBook-Pro, MacMini, OS X, OS X Maverick, OS X Snow Leopard, OSX Yosemite, Power User | Leave a Comment »

Date format converter from Text or Unix/Mac/Filetime/Microsoft to virtually any readable form

Posted by jpluimers on 2017/02/09

Brilliant Date format converter from dates in Text (almost any format) or timestamp numbers in Unix, Mac, Filetime or Microsoft (which is the same as Delphi TDateTime) format to any of these formats:

Text Date:
Date in human-readable text
Wednesday, March 23, 2016 4:05:39pm
RFC 822:
RFC 822 formatted date
Wed, 23 Mar 2016 16:05:39 +0000
ISO 8601:
ISO 8601 formatted date
UNIX Timestamp:
seconds since Jan 1 1970
Mac Timestamp:
seconds since Jan 1 1904
Microsoft Timestamp:
days since Dec 31 1899
100-nanoseconds since Jan 1 1601

Source: Date format converter


Posted in *nix, .NET, Apple, Delphi, Development, Mac, OS X, Power User, Software Development | 1 Comment »

Determining the current shell in *n*x variants including ESXi

Posted by jpluimers on 2017/02/08

On most systems, I use bash as shell, but not all systems have it, for instance the server uses tcsh and ESXi 4+ uses a very limited ash shell from busybox (ESX 4 had bash though).

There is this huge script that covers many shell and operating system versions (even DOS, Windows) and interpreters (python, ruby, php, etc) what shell is this which I got through Stéphane Chazelas‘s answer in linux – determine shell in script during runtime – Unix & Linux Stack Exchange

I wanted a shorter thing that works in current Linux, BSD, OS X and ESXi versions.

Some very short scripts are less reliable, for instance echo $SHELL looks nice, but isn’t always set.

Similar for echo $0 which will fail for instance if it shows as sh but in fact is a different shell in disguise.

This works for bash, tcsh and busybox sh, is a bit more precise than getting $0. It’s based on HOWTO: Detect bash from shell script – Stack Overflow:

lsof -p $$ | awk '(NR==2) {print $1}'

But on ESXi it shows this because lsof doesn’t take any parameter there and just dumps all information:


It’s because lsof on ESXi always shows this header where Cartel and World aren’t exactly well documented:

Cartel | World name | Type | fd | Description

Empirically for non VM related processes, it looks like the Cartel is the PID and World name the command.

On Linux and BSD based systems, the header looks like this, so command and PID are reversed in ESXi:


This command then works on both ESXi, OS X, Linux and BSD assuming you can word search for the PID and noting that PID/command will be reversed on ESXi as compared to OSX/Linux/BSD:

lsof -p $$ | grep -w $$ | awk '(NR==2) {print $1,$2}'


Posted in Apple, bash, BSD, Development, iMac, Mac, MacBook, MacBook Retina, MacBook-Air, MacBook-Pro, MacMini, OS X, OS X El Capitan, OS X Leopard, OS X Lion, OS X Maverick, OS X Mountain Lion, OS X Snow Leopard, OS X Tiger, OSX Yosemite, Power User, Scripting, Software Development | Leave a Comment »

fixing a Mac home `brew update` that has permission errors (after that I could install plantuml)

Posted by jpluimers on 2017/01/26

I had this occurring on my system:

RetinaMBPro1TB:~ jeroenp$ brew update
error: unable to unlink old 'Library/ENV/pkgconfig/10.11/libcurl.pc' (Permission denied)
error: unable to unlink old 'Library/ENV/pkgconfig/10.11/libxml-2.0.pc' (Permission denied)
error: unable to unlink old 'Library/ENV/pkgconfig/10.11/sqlite3.pc' (Permission denied)
To restore the stashed changes to /usr/local run:
  'cd /usr/local && git stash pop'
Already up-to-date.

This is how I solved it:

RetinaMBPro1TB:~ jeroenp$ ls -al /usr/local | grep -w Library
drwxr-xr-x+ 11 jeroenp  admin   374 Mar  9 19:33 Library
RetinaMBPro1TB:~ jeroenp$ sudo chown -R $USER /usr/local/Library/
RetinaMBPro1TB:~ jeroenp$ brew update
To restore the stashed changes to /usr/local run:
  'cd /usr/local && git stash pop'
Updated Homebrew from d32996d to 638d755.
==> New Formulae
==> Updated Formulae
==> Renamed Formulae
==> Deleted Formulae
RetinaMBPro1TB:~ jeroenp$ 

The above solution is based on major python problems · Issue #48301 · Homebrew/homebrew

After that, I could install plantuml (which requires java, just so you know) so now I can create SVGs from it locally:

plantuml -tsvg

Note I had to edit the formula so it installs plantuml-8037 or higher (the git version back then installed plantuml-8031) as it fixed a namespace bug. Since plantuml releases often, be prepared to do some version fiddling.


Posted in *nix, *nix-tools, Apple, Home brew, Java, Java Platform, Mac, MacBook, MacBook Retina, MacBook-Air, MacBook-Pro, MacMini, OS X, OS X Leopard, OS X Maverick, OS X Mountain Lion, OS X Snow Leopard, OSX Yosemite, Power User, Software Development | Leave a Comment »

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