Difference between snow leapord and lion

Hi .. I am trying to analyse the wifi driver code for mac os x and I am not getting what is the exact difference between snow leapord and lion in driver side.. I could only find the differnce in framework of ioctl .. could anyone tell me what is the exact difference other than features.. i mean in driver code..
Thanks in advance...

You can greatly reduce your level of concern, if you use an external drive to make a cloned duplicate of your current internal drive. You can use Carbon Copy Cloner
http://www.bombich.com
It seems to no longer be free (it was voluntary "donationware" before), but you can use it for free during a 30-day trial period. A "clone" is an exact duplicate of a hard drive volume, such as your usual internal startup disk. You can also use Disk Utility to make the duplicate, but using Carbon Copy Cloner is more straight forward.
Once you have the clone on an external drive volume, you can go to System Preferences Startup Disk pane and set the clone as the startup disk. Restart from the clone to confirm it is working properly. Once you are satisfied, start up from your usual internal startup disk and perform the system upgrade.
If there is a problem with the upgraded system, you can start up from the clone (on the external drive volume) like you did before, and "clone the clone" back to the internal drive. Since the clone is a duplicate of your startup disk immediately before you upgraded, you will be "back to square one."
NOTE: You should also use Time Machine for ongoing backups. You can also use your Time Machine backup to restore your system back to a previous state (in this case immediately before the upgrade). However, you cannot start up from a Time Machine backup, so having a bootable cloned backup feels safer. But, if you use Time Machine, it's good to know that you have a secondary way to restore the state of the previous system, if needed.

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What's the difference between Snow Leopard and Leopard?

I really don't see a reason in buying Snow Leopard if all it does is make my mac faster by 2 seconds at everything.

You can do what I've been doing for the past few years. Run the old version until I have a need to get a new system, then it comes with the newer OS. If I find I like the newer OS on the new hardware, I may upgrade the previous hardware.
For me at least I've got a PowerMac G5 (running Tiger), a MacBook (started on Tiger, went to Leopard), a Mac mini (running Leopard and was the trigger for upgrading the MacBook), and now I have an iMac/i7 (Snow Leopard and thinking of upgrading everyone by 1 version).
There are lots of little improvments in Snow Leopard (I'm starting to notice some of them myself), but if you either do not need them, or do not wish to disrupt your current environment, then stay with your current Mac OS X version.

In limbo between Snow Leopard and Lion. would love to make everything work in 10.6.8 again.

I had installed Lion, and saw that a number of my applications were no long available (including Quicken, Microsoft Office, some profession specific applications, not sure what else. You can't even update the older Quicken files to newer versions in Lion). This happened to coincide with my harddrive crashing. Off to the Genius bar, luckily I back up with Time Machine. I had Snow Leopard reinstalled as part of the visit to the Genius bar. Now I have the problem of other applications no longer working with Snow Leopard. iPhoto, Desktop/screen saver in System preferences, Mail seems to have lost all old emails and preferences. I am still looking around to see what else is acting quirky.
So, at this point I am trying to figure out how to get things working in Snow leopard again, or find out if I need to update other applications to be Lion compatible, and if I am stuck going back to Lion, (I kinda prefer Snow Leopard) How do I determine how many and which unsupported applications I would need to update before doing so.

thank you William for taking the time to help.
Just going to take a moment to be clear on what is going on with my MacMail. It seems that any messages that I had in my generic mailbox are all still there, however I had several addtional mailboxes for sorting out mail from different companies, people, etc. I also had Rules for all the corresponding mailboxes. These all seem to have disappeared. Also I seem to be running Version 4.5 (1084).
I can't seem to find the Library folder you mention. I went "Finder>Go>Home" clicked on home and I got a folder containing the following folders (plus a few others) Applications, Desktop, Documents, Downloads etc...
Am I looking in the right place. I also did a spotlight search for "Library" and no folders with that name came up.
I am not sure how much of a speed bump that is.
Thank you again for your help

What's the difference between Home Movie and Movie Project?

I edit my movies in iMovie. After editing, I 'Share' them to Movie Projects in Finder. There's also an iMovie Home Movies folder that contains duplicates of some of the movies I've created myself. What's the difference between these folders. And, can I delete any of them? Thank you.

A Time Capsule is hardware. It's basically an Apple AirPort Extreme wireless router with a built-in hard drive. For more info on this product:
http://www.apple.com/timecapsule/
Time Machine is a software application that allows your Mac to backup its data automatically to the hard drive on the Time Capsule. For more info on this software, which is included with the Leopard, Snow Leopard and Lion operating systems:
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What's the difference between deleted messages and trash?

what's the difference between deleted messages and trash?

A Time Capsule is hardware. It's basically an Apple AirPort Extreme wireless router with a built-in hard drive. For more info on this product:
http://www.apple.com/timecapsule/
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What's the difference between "Full Name" and "Account Name"

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Your computer name by default would be "John David Appleseed's Macbook Pro"
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Difference between Mac Pro and Mac XServer

Hi,
I wanted to know if there is any difference between Mac Pro and the Mac XServer - at the OS level? Meaning, if I design an application on Mac Pro would it run seamlessly on XServer or do I need to care about a few things.
Please advise.
Thanks,
Abhishek

Both Mac OS X and Mac OS X Server are presently at the Tiger 10.4.10 release, with Mac OS X Server having various added pieces and features, and having a few structural and configuration differences.
* Do both of them support the ipv6 protocol
Yes; both Mac OS X and Mac OS X Server both offer IPv6.
* do both of them support LDAP and PAM based authentication
Mac OS X and Mac OS X Server have LDAP support, yes. Mac OS X Server has LDAP authentication, DNS and a variety of other servers built in. Mac OS X is configured as a client, though there is the Apache web server.
Haven't looked for PAM for either platform.
* Do both of them support the same level of Java ( I understand we need 1.5 or higher for Tiger / Leapord)
Java itself is the same on both Mac OS X and Mac OS X Server, though Mac OS X Server has server-oriented pieces of Java present. And it's still write once, debug everywhere.
No Leopard questions are permissible here at this time; Leopard details are NDA.
* Do the compilers (gcc) have different compilation options - maybe xServer uses some better optimized flags that handle large volumes of data and network traffic.
AFAIK, there are no differences in gcc defaults. Nor would I expect any. Handling volumes of data is left to the programmer. (I'm not even sure how a compiler author would even implement that sort of difference.)
* Is there any difference in the behavior of the way the libraries ...
I'd expect the exact same behavior the programmer requested would occur with both platforms.
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You can choose to install Mac OS X Server on a Mac Pro. Probably the 10-client, because you probably aren't planning to serve piles of clients from the Mac Pro.
An overview of Mac OS X Server is here:
http://www.apple.com/server/macosx/specs.html
Now as to whether or not I would expect run-time differences, no. But I've been at this way too long and have chased way to many weird bugs to make any promises here.

What is difference between sy-tabix and sy-index.

SAP Seniors,
Can you please let me know what is difference between sy-index and sy-tabix.
I read the SAP help, it is confusing for me. it looks like both are same from help. please help me.
Thank you
Anitha.

HI,
Here is a brief description of difference between SY_TABIX and SY_INDEX and using them with several conditions.
SY-TABIX
Current line of an internal table. SY-TABIX is set by the statements below, but only for index tables. The field is either not set or is set to 0 for hashed tables.
APPEND sets SY-TABIX to the index of the last line of the table, that is, it contains the overall number of entries in the table.
COLLECT sets SY-TABIX to the index of the existing or inserted line in the table. If the table has the type HASHED TABLE, SY-TABIX is set to 0.
LOOP AT sets SY-TABIX to the index of the current line at the beginning of each loop lass. At the end of the loop, SY-TABIX is reset to the value that it had before entering the loop. It is set to 0 if the table has the type HASHED TABLE.
READ TABLE sets SY-TABIX to the index of the table line read. If you use a binary search, and the system does not find a line, SY-TABIX contains the total number of lines, or one more than the total number of lines. SY-INDEX is undefined if a linear search fails to return an entry.
SEARCH <itab> FOR sets SY-TABIX to the index of the table line in which the search string is found.
SY-INDEX
In a DO or WHILE loop, SY-INDEX contains the number of loop passes including the current pass.
Hope this helps.
Thank you,
Pavan.

Difference between sy-tabix and sy-index?

tell me about sy-tabix and sy-index?what is the difference between sy-tabix and sy-index?
Moderator Message: Please search before posting. Read the [Forum Rules Of Engagement |https://wiki.sdn.sap.com/wiki/display/HOME/RulesofEngagement] for further details.
Edited by: Suhas Saha on Jun 18, 2011 5:33 PM

HI,
Here is a brief description of difference between SY_TABIX and SY_INDEX and using them with several conditions.
SY-TABIX
Current line of an internal table. SY-TABIX is set by the statements below, but only for index tables. The field is either not set or is set to 0 for hashed tables.
APPEND sets SY-TABIX to the index of the last line of the table, that is, it contains the overall number of entries in the table.
COLLECT sets SY-TABIX to the index of the existing or inserted line in the table. If the table has the type HASHED TABLE, SY-TABIX is set to 0.
LOOP AT sets SY-TABIX to the index of the current line at the beginning of each loop lass. At the end of the loop, SY-TABIX is reset to the value that it had before entering the loop. It is set to 0 if the table has the type HASHED TABLE.
READ TABLE sets SY-TABIX to the index of the table line read. If you use a binary search, and the system does not find a line, SY-TABIX contains the total number of lines, or one more than the total number of lines. SY-INDEX is undefined if a linear search fails to return an entry.
SEARCH <itab> FOR sets SY-TABIX to the index of the table line in which the search string is found.
SY-INDEX
In a DO or WHILE loop, SY-INDEX contains the number of loop passes including the current pass.
Hope this helps.
Thank you,
Pavan.

What is difference between sy-index and sy-tabix and where both are using ?

what is difference between sy-index and sy-tabix and where both are using ?

hi nagaraju
sy-tabix is in Internal table, current line index. So it can only be used while looping at the internal table.
sy-index is in Loops, number of current pass. This you can use in other loop statements also (like do-enddo loop, while-endwhile)
SY-INDEX is a counter for following loops: do...enddo, while..endwhile
SY-TABIX is a counter for LOOP...ENDLOOP, READ TABLE...
Here is an example from which you can understand the difference between sy-tabix and sy-index.
Itab is an internal table with the following data in it.
id Name
198 XYZ
475 ABC
545 PQR.
loop at itab where id > 300.
write :/ itab-id, itab-name , sy-tabix, sy-index.
endloop.
My output will be :
475 ABC 2 1
545 PQR 3 2
Sy-tabix is the index of the record in internal table.
sy-index gives the no of times of loop passes.
So, for the first record in the output (475 ABC), 2 is the index of the record in internal table and as it is first time loop pass occured, sy-index value is 1.
Regards,
navjot
award points

The difference between chapter markers and dvd studio pro markers

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Thanks,

"Adding Chapter and Compression Markers to Your Sequence
Once you have your edited sequence or program finished, you can add markers to the sequence for use on DVD. Markers are reference points you can place within clips or sequences that identify specific frames. There are two kinds of markers you can add that directly relate to authoring a DVD—chapter markers and compression markers.
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So, JS was right the first time

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The difference between system restore and last good known configuration

hi,
what is the difference between system restore and last good known configuration.
in which situation you use system restore ,and in which situation you use last good known configuration.
very short answer wil be enough.
thanks
johan
h.david

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Last Known Good Configuration is disabled in Windows 8 or,Windows 8.1 by default.
Try using Last Known Good Configuration if you can't start Windows, but it started correctly the last time you turned on the computer.
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S.Sengupta, Windows Entertainment and Connected Home MVP

Difference between sy-datum and any given date

Dear Friends;
I have one query regarding DATE I wanna calculate the difference between
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Regards;
Parag

DATA: DATEDIFF TYPE P.
CALL FUNCTION 'SD_DATETIME_DIFFERENCE'
EXPORTING
    date1                 = '20071122'
    time1                 = '000001'
    date2                 = '20070905'
    time2                 = '000001'
IMPORTING
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EXCEPTIONS
   INVALID_DATETIME       = 1
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Greetings,
Blag.

Difference between sy-uline and uline

Hi All,
Any one of you please update me what is the difference between sy-uline and uline. Also when i give sy-uline in top-of-page event it gives error.
Thanks
sankar

with ULINE u can specify the position from where the ULINE should start
corresponds to WRITE AT 3(10) SY-ULINE.
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ex : 1
uline at 4(10).
write : / 'My Program'.
uline at 4(10).
ex : 2
write : 'My Program' , sy-uline.

Difference between snow leapord and lion

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