TweetFollow Us on Twitter

Jun 94 Tips
Volume Number:10
Issue Number:6
Column Tag:Tips & Tidbits

Tips & Tidbits

By Scott T Boyd, Editor

Note: Source code files accompanying article are located on MacTech CD-ROM or source code disks.

Tip Of The Month

MPW Quoting Time Saver

Every self respecting Mac programmer knows that in MPW, string literals and shell variables containing spaces must be quoted. What many experienced shell users don’t know is that the option-space character, which looks just like a regular space, bypasses this requirement when dealing with the file system. Amaze your friends by typing Directory "{Boot}"Desktop Folder without any quotes (slip in that option-space while they’re not looking). It’s a great time saver and party ice breaker!

Without an option-space:

Directory "{Boot}"desktop folder

### Directory - Too many parameters were specified.

# Usage - Directory [-q | directory]

With an option-space, no error is returned:

Directory "{Boot}"Desktop Folder

- Paul Mercer

mercer@netcom.com

Spread the word about things you know that others could benefit from knowing! Send

us your tips and tidbits, especially programming-related tips. We’re also looking for user tips particularly useful to programmers .

MacTech Magazine will pay $25 for every tip used, and $50 for the Tip of the Month. You can take your award in orders or subscriptions if you prefer.

To submit a tip, send it in by e-mail. (Please make sure your code compiles). See page two for our addresses.

Slimming down “fat binaries” with MPW

Fat binaries contain both Macintosh 68K and PowerPC code, so they can run on any Mac hardware and take advantage of whatever processor is present.

A fat binary contains 68K executable 'CODE' resources and other standard Mac resources in the resource fork, and PowerPC Executable Format (PEF) code in the data fork. It also includes a 'cfrg' resource, to tell a Power Mac to ignore CODE resources at startup and look for PEF code in the data fork. A 68K Mac ignores the 'cfrg' resource and PEF code, using the 'CODE' resources instead.

This is fine for developers who only want to ship only one version of their product, and for users who want to be able to just click and go on any system, even when file-sharing across a network mixed with 68K and Power Macs. But lone power users with limited disk space may wish to perform liposuction on fat binaries, and MPW makes it easy.

To convert a fat binary to a “68K only”application:


/* 1 */
# MPW Script "To68K"
  If {#} != 1
    Echo "# Usage: {0} fat_application_name"
  Else
    Derez -skip cfrg "{1}" | Rez -o "{1}" # eliminate 'cfrg' resource
    Duplicate -y -r "{1}" "{1}.temp"      # eliminate data fork
    Rename -y "{1}.temp" "{1}"            # replace original file
  End

To convert a fat binary into a “Power Mac only” application:


/* 2 */
# MPW Script "ToPowerMac"
  If {#} != 1
    Echo "# Usage: {0} fat_application_name"
  Else
    Derez -skip CODE "{1}" | Rez -o "{1}" # eliminate 'CODE' resources
  End

Caveats: Neither of these scripts check if they are really operating on a fat binary, nor do they know whether a native version might need one or more CODEsegments, so be careful how you apply them, and please don’t perform surgery on your only copy of any file!

- Lee David Rimar, Absoft Corporation

Ever heard of setkey?

I’m just amazed at some of the SmartFriends™ I know who haven’t heard of SetKey, an MPW command that has been around for quite some time. It just goes to show how few people read release notes or manuals for MPW. Maybe it’s just that these people all worked at Apple, where coming by production versions of manuals can be enough of a chore that it’s not worth the trouble.

At any rate, SetKey lets you attach a script to any key or key combination on your keyboard, even the function keys on the extended keyboard. So tip #1 is to try out SetKey. SetKey uses the following syntax:


/* 3 */
SetKey <empty> | -r | [modifierkey-] key[-modifierkey-] key] [string]
    modifierkey = command | option | shift | control
    -r          # revert to the default key assignments

Tip #2 is to enter SetKey in a shell window, and see what’s already set. You might be surprised at some of the things MPWalready knows how to do with key combinations.

Function keys are F1-F15. Other keys are referenced by name, such as the following:


/* 4 */
setkey Option-Command-Downarrow         MoveEndOfFile
setkey Option-Command-Uparrow           MoveStartOfFile
setkey Option-Shift-Delete              Beep
setkey Option-Shift-Escape              Beep
setkey Option-Shift-Clear               'Clear § "{active}"'
setkey Option-Shift-Del                 Beep
setkey Option-Shift-Leftarrow           SelectWordLeft

For Tip #3 and following, here are some scripts Iuse a lot:

• To mark the current selection in the active window, Iuse function key F8.


/* 5 */
# mark current selection in the Active window
setkey F8   'Mark § "`Catenate "{Active}".§`" "{Active}" -y'

• Here’s a fun one. It sorts the current selection.


/* 6 */
# sort the current selection in the Active window
SetKey F12 'sort  -o "{SysTempFolder}MPW.Scratch" 
 "{Active}".§ ;  
     catenate "{SysTempFolder}MPW.Scratch" > "{Active}".§ ;  
     delete   "{SysTempFolder}MPW.Scratch"'

• Finally, here are three simple scripts Iuse frequently. I add them to a new menu, and Igive that menu the cloverleaf character from the command key as a title. The first line sets a variable to have the value of the cloverleaf character. Where you see the cloverleaf below, you’ll probably see a n character when you type control-Q.


/* 7 */
Set Key Cmd   # cloverleaf = ctl-Q

This one compiles the current selection, then dumps the object code that the C compiler generated.


/* 8 */
AddMenu {Key} 'C->DumpObj §'  'C "{Active}.§" -mc68020 -mbg 
 off -o "{SysTempFolder}temp.c.o"; 
 DumpObj "{SysTempFolder}temp.c.o" -co'

This one assembles the current selection, then dumps the resulting object code.


/* 9 */
AddMenu {Key} 'Asm->DumpObj §'  'Asm "{Active}.§" 
 -o "{SysTempFolder}temp.c.o"; 
     DumpObj "{SysTempFolder}temp.c.o" -co'
This one compares the current selection in the active window to the selection 
in the target window.

/* 10 */
AddMenu {Key} 'Compare {Active}.§ §'  
 'Compare "{Active}.§" "{Target}.§" >> "{Worksheet}"'

- Gordon Sheridan, General Magic

Assembling kährs

When putting together a Kährs wood plank floor, go ahead and shell out the thirty dollars or so for the “pull-up” tool. It’s not entirely obvious why you’d need it when you first start putting the floor together, although it looks like it might be handy to cinch up planks once you have the whole row down. It turns out not to help for that (the friction is simply too great along the length of the plank), but it does wonders when you start laying the last couple of rows. Up to that point, you can just use a tap-block and a mallet to tighten the new plank against the previous row. Once you get close to the far wall, though, there’s no room to swing the mallet, much less place the tap-block. The pull-up tool fits into the groove which is right against the wall, and gives you some room to swing the mallet, and pull the board into place.

- Al Borland, Chicago, IL

[Thanks for the tip, Al. It’s definitely better than putting a hole in the drywall with a prybar. You might want to send this tip to HomeTech Magazine as well - I understand they give away a free can of putty!. - Ed kag]

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

NetShade 6.3.1 - Browse privately using...
NetShade is an anonymous proxy and VPN app+service for Mac. Unblock your Internet through NetShade's high-speed proxy and VPN servers spanning seven countries. NetShade masks your IP address as you... Read more
Dragon Dictate 4.0.7 - Premium voice-rec...
With Dragon Dictate speech recognition software, you can use your voice to create and edit text or interact with your favorite Mac applications. Far more than just speech-to-text, Dragon Dictate lets... Read more
Persecond 1.0.2 - Timelapse video made e...
Persecond is the easy, fun way to create a beautiful timelapse video. Import an image sequence from any camera, trim the length of your video, adjust the speed and playback direction, and you’re done... Read more
GIMP 2.8.14p2 - Powerful, free image edi...
GIMP is a multi-platform photo manipulation tool. GIMP is an acronym for GNU Image Manipulation Program. The GIMP is suitable for a variety of image manipulation tasks, including photo retouching,... Read more
Sandvox 2.10.2 - Easily build eye-catchi...
Sandvox is for Mac users who want to create a professional looking website quickly and easily. With Sandvox, you don't need to be a Web genius to build a stylish, feature-rich, standards-compliant... Read more
LibreOffice 5.0.1.2 - Free, open-source...
LibreOffice is an office suite (word processor, spreadsheet, presentations, drawing tool) compatible with other major office suites. The Document Foundation is coordinating development and... Read more
f.lux 36.1 - Adjusts the color of your d...
f.lux makes the color of your computer's display adapt to the time of day, warm at night and like sunlight during the day. Ever notice how people texting at night have that eerie blue glow? Or wake... Read more
VirtualBox 5.0.2 - x86 virtualization so...
VirtualBox is a family of powerful x86 virtualization products for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers... Read more
File Juicer 4.43 - Extract images, video...
File Juicer is a drag-and-drop can opener and data archaeologist. Its specialty is to find and extract images, video, audio, or text from files which are hard to open in other ways. In computer... Read more
Apple MainStage 3.2 - Live performance t...
MainStage 3 makes it easy to bring to the stage all the same instruments and effects that you love in your recording. Everything from the Sound Library and Smart Controls you're familiar with from... Read more

ReBoard: Revolutionary Keyboard (Utilit...
ReBoard: Revolutionary Keyboard 1.0 Device: iOS Universal Category: Utilities Price: $1.99, Version: 1.0 (iTunes) Description: Do everything within the keyboard without switching apps! If you are in WhatsApp, how do you schedule a... | Read more »
Tiny Empire (Games)
Tiny Empire 1.1.3 Device: iOS Universal Category: Games Price: $2.99, Version: 1.1.3 (iTunes) Description: Launch cannonballs and blow tiny orcs into thousands of pieces in this intuitive fantasy-themed puzzle shooter! Embark on an... | Read more »
Astropad Mini (Productivity)
Astropad Mini 1.0 Device: iOS iPhone Category: Productivity Price: $4.99, Version: 1.0 (iTunes) Description: *** 50% off introductory price! ​*** Get the high-end experience of a Wacom tablet at a fraction of the price with Astropad... | Read more »
Emo Chorus (Music)
Emo Chorus 1.0.0 Device: iOS Universal Category: Music Price: $1.99, Version: 1.0.0 (iTunes) Description: Realistic Choir simulator ranging from simple Chorus emulation to full ensemble Choir with 128 members. ### introductory offer... | Read more »
Forest Spirit (Games)
Forest Spirit 1.0.5 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0.5 (iTunes) Description: | Read more »
Ski Safari 2 (Games)
Ski Safari 2 1.0 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0 (iTunes) Description: The world's most fantastical, fun, family-friendly skiing game is back and better than ever! Play as Sven's sister Evana, share... | Read more »
Lara Croft GO (Games)
Lara Croft GO 1.0.47768 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0.47768 (iTunes) Description: Lara Croft GO is a turn based puzzle-adventure set in a long-forgotten world. Explore the ruins of an ancient... | Read more »
Whispering Willows (Games)
Whispering Willows 1.23 Device: iOS Universal Category: Games Price: $4.99, Version: 1.23 (iTunes) Description: **LAUNCH SALE 50% OFF** - Whispering Willows is on sale for 50% off ($4.99) until September 9th. | Read more »
Calvino Noir (Games)
Calvino Noir 1.1 Device: iOS iPhone Category: Games Price: $3.99, Version: 1.1 (iTunes) Description: The film noir stealth game. Calvino Noir is the exploratory, sneaking adventure through the 1930s European criminal underworld.... | Read more »
Angel Sword (Games)
Angel Sword 1.0 Device: iOS Universal Category: Games Price: $6.99, Version: 1.0 (iTunes) Description: Prepare to adventure in the most epic full scale multiplayer 3D RPG for mobile! Experience amazing detailed graphics in full HD.... | Read more »

Price Scanner via MacPrices.net

Big Grips Lift Handle For iPad Air and iPad A...
KEM Ventures, Inc. which pioneered the extra-large, super-protective iPad case market with the introduction of Big Grips Frame and Stand in 2011, is launching Big Grips Lift featuring a new super-... Read more
Samsung Launches Galaxy Tab S2, Its Most Powe...
Samsung Electronics America, Inc. has announced the U.S. release of the Galaxy Tab S2, its thinnest, lightest, ultra-fast tablet. Blending form and function, elegant design and multitasking power,... Read more
Tablet Screen Sizes Expanding as iPad Pro App...
Larger screen sizes are gaining favor as the tablet transforms into a productivity device, with shipments growing 185 percent year-over-year in 2015. According to a new Strategy Analytics’ Tablet... Read more
Today Only: Save US$50 on Adobe Elements 13;...
Keep the memories. lose the distractions. Summer’s winding down and it’s time to turn almost perfect shots into picture perfect memories with Elements 13. And get the power to edit both photos and... Read more
1.4GHz Mac mini on sale for $449, save $50
Best Buy has the 1.4GHz Mac mini on sale for $50 off MSRP on their online store. Choose free shipping or free local store pickup (if available). Price for online orders only, in-store price may vary... Read more
12-inch 1.1GHz Gold MacBook on sale for $1149...
B&H Photo has the 12″ 1.1GHz Gold Retina MacBook on sale for $1149.99 including free shipping plus NY sales tax only. Their price is $150 off MSRP, and it’s the lowest price available for this... Read more
27-inch 3.3GHz 5K iMac on sale for $1849, sav...
Best Buy has the 27″ 3.3GHz 5K iMac on sale for $1849.99. Their price is $150 off MSRP, and it’s the lowest price available for this model. Choose free shipping or free local store pickup (if... Read more
Worldwide Tablet Shipments Expected to Declin...
Does Apple badly need a touchscreen convertible/hybrid laptop MacBook? Yes, judging from a new market forecast from the International Data Corporation (IDC) Worldwide Quarterly Tablet Tracker, which... Read more
Continued PC Shipment Shrinkage Expected Thro...
Worldwide PC shipments are expected to fall by -8.7 percent in 2015 and not stabilize until 2017, according to the latest International Data Corporation (IDC) Worldwide Quarterly PC Tracker data. The... Read more
Imminent iPhone 6s Announcement Leads To 103%...
NextWorth Solutions, with its online and in-store electronics trade-in programs including http://NextWorth.com, reports that it has experienced a 103 percent surge in quoted trade-in values over the... Read more

Jobs Board

*Apple* Music, Business Operations - Apple I...
Changing the world is all in a day039s work at Apple . If you love innovation, here039s your chance to make a career of it. You039ll work hard. But the job comes with Read more
WW *Apple* Retail Online Store: Customer In...
**Job Summary** The Apple Retail - Online Store is seeking an experienced web merchandising analytics professional to join the Customer Insights Team. The Web Read more
Senior Payments Security Manager - *Apple*...
**Job Summary** Apple , Inc. is looking for a highly motivated, innovative and hands-on senior payments security manager to join the Apple Pay security team. You will Read more
Software QA Engineer, *Apple* Pay Security...
**Job Summary** Imagine what you could do here. At Apple , great ideas have a way of becoming great products, services, and customer experiences very quickly. Bring Read more
Business Process Engineer ( *Apple* Online S...
**Job Summary** The Apple Online Support Planning team is looking for an experienced Business Process engineer to lead key business process improvement initiatives Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.