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What terminal command shows the type of display that I have on my MacBook Pro? I used the following command in terminal and it didn't work:

ioreg -lw0 | grep \"EDID\" | sed "/[^<]*
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This command definitively will not work (the parameters to sed are wrong). Does ioreg -lw0 | grep EDID produce any results at all? – patrix♦ Aug 17 '12 at 18:01
ioreg -w0 -c IOHIDInterface might be a bit closer, but it's going to be tricky to do this with shell commands, which are typically designed to handle line-wise records, not ascii-art-tree records. – Ken Aug 17 '12 at 18:39
No it does not. I am completely new to the apple world. This is my first macbook. I got the command from this article. m.tuaw.com/2012/08/14/… – Jason Aug 17 '12 at 19:15
@Patrix: Yes it does show something, but not what i'm looking for. Thank you for you help. – Jason Aug 17 '12 at 19:18
@Ken: This gives me a lot of information. I will go thru it to see if it tells me that my screen is from LG or Samsung. Thank you for you assistance! – Jason Aug 17 '12 at 19:19
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2 Answers

up vote 4 down vote accepted 
ioreg -lw0 | grep \"EDID\" | sed "/[^<]*</s///" | xxd -p -r | strings -6

Depending on the string that comes up it will tell you the manufacturer of the display. It will not display in plain text.

Assuming you have a Retina display, a string with LP in it means it's an LG.

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Bo! It works!!! It works!!! Thank you! You rock. – Jason Aug 17 '12 at 19:34
Thanks! Please mark this as the answer to close it out. – Bo Shubinsky Aug 17 '12 at 19:38
The command doesn't seem to work with the new MacbookPro 13" Retina. Could anyone please check this? I'm encountering a display issue with my new mac :( – Ngoc Pham Nov 17 '12 at 16:38
On my 13" non-Retina, it also appears to do nothing, the cmd returns without any output – ataulm Dec 8 '12 at 17:52
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I just learned about xxd. Cheers! – adavid Jan 18 at 12:25
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Does the relevant info show up in system profiler?

If so, there's a command line: system_profiler. You can extract all kinds of information using the command line and piping it to cat, sed, awk, more, tail, etc.

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Thanks Harv - what Bo provided worked. – Jason Aug 17 '12 at 19:34

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