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- FILE NAMES AND EXTENSIONS - THE KEYS TO THE KINGDOM
-
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-
- To the beginner, DOS is a little cryptic in its use of file
- names. Study the example directory listing below and the
- notes to the right of the listing:
-
- PCPC EXE 51489 5-03-86 3:36p ---> PCPC.EXE
- PCPR EXE 21457 5-03-86 3:29p ---> PCPR.EXE
- PCPY EXE 32017 5-03-86 3:39p ---> PCPY.EXE
- README 128 5-03-86 12:46p ---> README
- NOTES565 TXT 1390 7-03-86 8:31a ---> NOTES565.TXT
-
- In each case you will note the REAL file name to the right and
- the directory listing version to the left. The point is that
- in DOS, filenames always have a name, a period or dot and an
- optional (but highly useful) extension. This is a very important
- point!
-
- KEYS TO THE SHAREWARE KINGDOM!
-
- Study the following list carefully, perhaps print it on paper
- and mark it with a colored highlighter. This list contains a
- roster of filename extensions which reveals the type of file and
- its possible contents and application.
-
- FILE EXTENSIONS WHICH PROBABLY CONTAIN DOCUMENTATION,
- INSTRUCTIONS OR PRINTED TEXT
-
- .DOC ---------> Probable DOCumentation file
- .TXT ---------> Probable Text (TXT) file
- .MAN ---------> Probable MANual/instruction file
- .LST ---------> Probable file containing a LIST.
- .PRN ---------> Probable text file from a PRINTED source.
- .INS ---------> Probable INSTRUCTIONS in text form.
- .HLP ---------> Probable HELP text file.
- . ---------> NO, EXTENSION. VERY LIKELY A TEXT FILE!
- .HST ---------> Probable text file containing HISTORY of
- program revisions
-
- FILENAMES (WITH OR WITHOUT EXTENSIONS) WHICH PROBABLY
- CONTAIN INSTRUCTIONS OR PRINTED TEXT
-
- README ---------> VERY IMPORTANT TEXT FILE
- READ.ME ---------> VERY IMPORTANT TEXT FILE
- READ.1ST ---------> VERY IMPORTANT TEXT FILE
- READ ---------> VERY IMPORTANT TEXT FILE
- READ.NOW ---------> VERY IMPORTANT TEXT FILE
-
- NOTE! There are so many variations of the "READ..." theme that
- hopefully you can imagine other variations of this "READ..."
- concept!
-
- If you stop and think about it for a minute, most of these
- extensions and filenames offer strong clues about file contents
- and phonetically "hint" to you what the file contains. Here are
- some examples you might actually see. Note the "clues" that tell
- you text or instructions are available inside the file:
-
- 1232XX.TXT MAKE445.DOC SYSOPS.
- ASEASY.LST MANUAL.TXT READ.
- DATABASE.DOC MANUAL. AUTHOR.
- ENTIRE.MAN FORMFEED.MAN VENDOR.
- MONEY.TXT HOMEHELP.HLP README.
- README.!!! HOMEHELP.LST README.NOW
- READSOON. HOMEHELP.HST VENDORS.
- BBM.PRN TRY44B.DOC MANUAL.PRN
-
- Once you have determined that a file contains text or
- instructions, you need to read the information on your screen.
- There are three ways to do this 1) the hard old DOS way. 2) the
- better DOS way 3) use a file viewer - easiest.
-
- 1) THE HARD, BUT ACCEPTABLE WAY: Use DOS TYPE command:
-
- Example, A>type readme.doc (will type the document file
- README.DOC to the screen)
-
- Example, A>type B:readme.doc (will type the document file
- README.DOC which is on the B: floppy drive)
-
- Example, A>type readme.doc>prn (will type the document on your
- printer). Important!
-
- Use the Ctrl and S keys together to pause rapid screen
- scrolling. Any key touched resumes and Ctrl-S again pauses. Use
- Ctrl and C keys (Ctrl-C) to abort the whole process! Think of
- this reminder: Ctrl-S means "stop." Ctrl-C means "crash the
- process."
-
- 2) A SLIGHTLY BETTER WAY: DOS MORE AND PIPING
-
- Here is another shortcut if the screen of information scrolls by
- too fast to read. Use the DOS MORE filter. This MAY or MAY NOT
- work on some computers. Switch to your hard drive where the file
- MORE.COM usually resides in the DOS subdirectory. Now to read
- the documentation file, for example README.DOC, on the A: drive,
- do this:
-
- C>TYPE A:README.DOC|MORE
-
- Note that you are in the C: drive. You are viewing the file
- README.DOC on the A: drive. The vertical bar | is usually on the
- backslash key \ and is a shifted charter (uppercase). Note that
- there are no blank spaces between the file name README.DOC, the
- vertical bar | and the MORE command. This may or may not work on
- all computers. MORE.COM must be pathed through the DOS directory
- to work. More is a DOS filter. The vertical bar | is called a
- pipe. Thus we are "piping" the output of the type command though
- the more filter. Sounds odd, but this is one of the obscure
- tricks of DOS!
-
- 3) THE BEST WAY: An external file viewer or browser. The easiest
- and most comforable.
-
- Sometimes a shareware vendor or computer club can provide a file
- viewer. These go by many names. Popular viewers are LIST.COM,
- BROWSE.COM, VIEW.EXE, PAGE.EXE and others. These let you view
- inside a text file and page up and down with minimum muss and
- fuss! For our example, let's pretend you are using the popular
- LIST.COM program.
-
- Example, A>list readme.doc (will type the document file
- README.DOC to the screen)
-
- Example, A>list A:readme.doc (will type the document file
- README.DOC which is on the A: floppy drive to the screen)
-
- Example, A>list C:\doc\readme.doc (will type the document
- file README.DOC which is on the C: hard drive in the \DOC
- subdirectory to the screen)
-
- Here's another tip. Sometimes a shareware program may not use a
- file like PROGRAM.DOC or README.TXT for instructions but instead
- a program file like README.COM or MANUAL.EXE or VPDOCS.COM. The
- idea here is that instead of using a TEXT FILE the programmer is
- using a program to run and display the documentation! So for
- this variation, you simple run the program to see the
- documentation.
-
- Example: for VPDOC.COM at the DOS prompt simply type the name
- of the file: C>VPDOC (then press return/enter key)
-
- Example: For README.COM C>README (then press return/enter
- key)
-
- Let's move on and talk about other filenames and extensions
- which do other jobs on a computer.
-
- OTHER IMPORTANT FILENAME EXTENSIONS
-
- .EXE ---------> An EXECUTABLE FILE which starts program
- .COM ---------> A COMMAND FILE which starts program
- .BAT ---------> BATCH FILE which starts program
- .BAS ---------> BASIC file which can be run with
- the aid of the GWBASIC interpreter
- GWBASIC which is normally on your DOS
- disk or hard drive.
-
- FILE EXTENSIONS WHICH INDICATE THE FILE
- IS "COMPRESSED OR ARCHIVED" AND MUST BE UNPACKED PRIOR TO USE
-
- .ZIP ---------> Compressed file, use PKUNZIP to unpack
- .ARC ---------> Compressed file, use ARC
- .PAK ---------> Compressed file, use PAK
- .LZH ---------> Compressed file, use LHARC
- .ZOO ---------> Compressed file, use ZOO
-
- OTHER USEFUL EXTENSIONS
-
- .BAK ---------> A backup or duplicate file
- .DAT ---------> A data file
- .CFG ---------> Configuration data for program
- .WKS ---------> Spreadsheet file
- .WK1 ---------> Spreadsheet file
- .DBF ---------> Database file in dBase format
- .ASC ---------> ASCII file, perhaps a basic program
- saved in ASCII format
- .BIN ---------> Binary file, file used by a program
-
- Some shareware disk vendors try to help you by putting their own
- files on a disk with a little extra information. The following
- file examples might offer help in text or documentation form. An
- advanced shareware user would guess quickly that these files
- refer to a disk from a shareware vendor or computer club library
- and are most probably disk number 565 in a larger set of
- programs that vendor or club offers in a library collection.
-
- NOTES565 TXT 1390 7-03-86 8:31a
- FILES565 TXT 1728 7-03-86 8:37a
-
- If you buy a disk from a disk vendor named BEST VALUE SHAREWARE
- DISTRIBUTORS you might look for files such as the following
- which also contain text, BAT, COM or other file startup
- information.
-
- Each vendor might use a different system, but watch for these
- patterns as you list directory information on a shareware disk.
- With the variety of methods, your best bet is to study filename
- extensions for a few minutes and "play detective" which for some
- folks is a bit of the interest in using shareware!
-
- FILES PUT ON A DISK BY A HYPOTHETICAL SHAREWARE
- DISK VENDOR NAMED BEST VALUE SHAREWARE INC.
-
- BESTVAL.COM 1390 7-03-86 8:31a
- BESTVAL.TXT 1728 7-03-86 8:37a
- BV.DOC 5656 7-03-86 8:31a
- RUNBEST.COM 1777 7-03-86 8:37a
- BESTVAL.767 8787 8-9-91 9:30P
-
- ----------------------------------------------------------------
-
- COM, EXE AND BAT FILES START PROGRAMS
-
- ----------------------------------------------------------------
-
- A file ending in EXE or COM is a file which contains a
- EXECUTABLE OR "RUNNABLE" program and is a way to start a
- software package.
-
- Examples:
-
- To start PCF.EXE do this PCF (then press enter).
- For DBFKK.EXE DBFKK (then press enter.)
-
- Some files which end in BAS will need a basic interpreter such
- as GWBASIC.EXE to operate. Example files would be GAME.BAS or
- MUSIC.BAS. GWBASIC.EXE is usually included on your DOS disk
- which came with the computer.
-
- Another standard of shareware programs is to use batch files to
- start programs. GO.BAT or MENU.BAT or START.BAT or INSTALL.BAT
- are "batch files." Simply type the first word at the prompt to
- proceed.
-
- Example: for file GO.BAT GO (then press enter).
-
- DOS searches a disk for programs to run in a precise order:
-
- HELLO.COM ---------> Run this first if found then try
- HELLO.EXE ---------> to find and run this then
- HELLO.BAT ---------> try to find and run this.
-
- ----------------------------------------------------------------
-
- BASIC DATA FILES
-
- ----------------------------------------------------------------
-
- If you find a BASIC program file which ends in .BAS try this
- per the following example . . .
-
- For the file HELLO.BAS, first copy both GWBASIC.EXE
- and HELLO.BAS to a blank formatted diskette. Then issue the
- command:
-
- A>GWBASIC HELLO
-
- Another alternative is to leave GWBASIC.EXE on your hard drive
- and tell it where the basic program is located.
-
- Example: C>GWBASIC A:HELLO
-
- The above example assumes a copy of GWBASIC.EXE resides on your
- hard drive and a floppy containing the basic program HELLO.BAS
- is on the A: drive.
-
- The program will be loaded into GWBASIC and run. If you
- don't care for the program, try to exit if the program gives
- you a menu of choices, otherwise press CTRL-BREAK keys
- at same time which will let GWBASIC exit. You will see an
- "OK" prompt. Type the word "system" and press the return/enter
- key to return you to DOS and leave GWBASIC.
-
- Basic is a rather elegant and precise programming system if you
- are interested! Pick up a book at your local library and you can
- learn how to use GWBASIC.EXE on your DOS disk to write and modify
- your own elaborate custom programs! Also investigate the
- availability of affordable Basic compiler programs which prepare
- speedy .EXE free standing programs rather than requiring you to
- haul out your GWBASIC.EXE file each time you wish to run the
- program.
-
- ----------------------------------------------------------------
-
- SOME EXAMPLES - OUR FIRST POP QUIZ!
-
- ----------------------------------------------------------------
-
- Try to puzzle through this pop quiz! Small stars next to the
- filenames indicate an educated guess as to IMPORTANT TEXT
- information or documentation contained within. These directory
- lists are similar to what you might see on your screen when using
- the DIR command when you first explore a new software disk. Brief
- notes may follow each directory listing.
-
- ** means high probability documentation is contained within
- * means some documentation possibly is contained within
-
-
- BRUN10 EXE 58388 7-17-85 1:56p
- BUSINESS DAT 384 5-04-86 6:42a
- DELXTRA BAT 128 5-03-86 6:55p
- MSG1 TXT 384 5-03-86 7:10p *
- MSG2 TXT 768 5-03-86 7:23a *
- PAY BAT 16 9-02-85 12:11p
- PCPAY DOC 64512 5-04-86 7:11a **
- PCPC EXE 51489 5-03-86 3:36p
- PCPR EXE 21457 5-03-86 3:29p
- PCPY EXE 32017 5-03-86 3:39p
- PRNTDOC BAT 128 5-03-86 7:09p
- README BAT 128 5-03-86 12:46p
- GO BAT 668 7-03-86 8:39a
- NOTES565 TXT 1390 7-03-86 8:31a *
- FILES565 TXT 1728 7-03-86 8:37a *
-
-
- Note that on the above disk the LARGEST file PCPAY.DOC contains
- 64,512 bytes. Its size leads to strong suspicion it contains
- the main documentation. Shorter files probably contain other
- useful data. The two files at the bottom of the directory listing
- make one suspect this disk in number 565 in a club library or
- disk vendor collection. Sherlock Holmes would approve of our
- logic!
-
-
- ASEASY EXE 205392 7-17-90 10:29a
- ASEASY MSG 9636 7-16-90 6:27p *
- ASEASY CFG 298 1-18-90 7:47p
- ASEASY HLP 58346 4-25-90 9:05a **
- HTREE EXE 9185 4-11-90 12:36a
- ASAU400 COM 36610 4-11-90 2:26p
- VENDOR DOC 3784 4-10-90 11:54p *
- LICENSE DOC 4133 4-11-90 12:28a *
- ORDER ME 4301 10-15-89 11:24p *
- YESNO COM 97 10-02-86 9:47p
- SETUP BAT 2873 7-18-90 12:26p
- READ ME 19512 4-12-90 11:53a **
-
-
- The largest file which hints it contains text data would be a
- good candidate to examine! The file SETUP.BAT suggests that
- some intial setup or configuration of the program is necessary
- prior to use.
-
-
- COMFILES <DIR> 12-05-89 4:48p
- GOODBY 384 10-03-89 2:44p *
- INTRO1 512 1-11-90 8:19a **
- INTRO2 896 10-08-89 7:02p **
- MENU 640 10-03-89 3:41p
- NEWPROD 2176 10-03-89 3:40p *
- MANUAL DOC 77568 2-02-91 11:12a **
- QUICK DOC 33664 2-02-91 11:10a **
- TUTR DOC 109696 10-02-89 4:30p **
- SEBFI COM 2270 12-10-89 2:50p
- SEBFI DOC 5888 12-05-89 8:04p *
- SEBFI BAT 384 12-02-89 1:25p
- LASTMIN ANN 512 12-08-89 1:45p *
- GO BAT 1362 1-31-91 6:17p
- SEBFIM BAT 384 12-08-89 3:05p
-
-
- This is a disk with several important documentation files, but
- a highly unusual second subdirectory! COMFILES <DIR> contains
- other file(s) and must ALSO be examined. The DOS CD or
- change directory command must be used to examine this other
- subdirectory or file storage area of the disk. See your DOS manual.
- Most shareware authors try to stay away from using additional
- subdirectories on a disk which can confuse a beginner. The file
- LASTMIN.ANN would tell an advanced shareware user that the file
- contains "last minute announcements" and is most probably
- a text file. TUTR.DOC probably means "tutorial document."
- QUICK.DOC is probably quick startup documentation.
-
-
- HM EXE 306347 8-28-90 11:48a
-
-
- This is an odd disk indeed. No documentation? Actually this
- is a special SELF-EXTRACTING file which is usually copied
- to a hard drive run with the command HM. The file will proceed
- to unpack itself and produce several files containing
- documentation, COM or EXE files and more! Most authors would
- include a small README file on the disk to advise you of this
- fact, but this author has omitted even that! If you locate a
- large EXE file, copy it to your hard drive (perhaps into
- a subdirectory named TEMP or temporary) and then run the
- file to cause it to unpack and produce all the little subfiles
- which are the main program! Shareware authors do this to
- conserve disk space or otherwise compress large programs to
- fit onto fewer disks.
-
-
- DBATE001 EXE 185785 3-25-90 9:07a
- DBATE002 EXE 284884 6-22-90 11:28p
- DBATE003 EXE 244771 9-19-90 7:47p
- READ1ST EXE 6267 11-26-90 11:04p **
-
-
- READ1ST.EXE is run since it is a self-extracting EXE file which
- probably produces documentation notes. The other three files are
- probably self-extracting files which produce three separate
- programs. This is a case of multiple self-extracting files! A
- clever author is highly compressing his data to save space on
- disk!
-
-
- FUNNELS EXE 59904 9-21-84 3:01p
- FUNNELS DOC 14713 9-21-84 1:58p **
- FUNNELS INV 2432 9-21-84 3:18p
- ATC2 BLD 4096 8-23-84 9:08p
- ATC EXE 50304 7-09-84 11:20a
- AUTOEXEC BAT 11 7-12-84 10:29a
- ATC DAT 384 1-01-80 1:04a
- EUCHRE BAS 22784 7-21-84 3:09p
- EUCHRE DOC 3645 7-21-84 3:52p **
- CRC TXT 1123 11-16-84 7:06a *
- FUNNELS SCR 128 11-25-88 10:27a
-
-
- A relatively simple disk. Text or documentation files indicated.
- Do you see the single basic BAS file which will require a copy
- of GWBASIC.EXE?
-
- Pop quiz part 2: Grab a few loose disks from any random source
- and repeat this detective process a few times and you will soon
- be a shareware GURU!
-
-
-