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Mail Archives: cygwin/1999/10/31/15:50:28

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Date: Sun, 31 Oct 1999 14:29:52 CST

Subject: FW: B20: 'ash' (not bash) parameter expansion difficulties

Message-ID: <19991031.154514.2567.0.DBKing@juno.com>

X-Mailer: Juno 1.49

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186,188,190,192,194,196,198,200,202,204,206-252,254-255,257,

259-260,262-263,265-268

From: David B King <dbking AT juno DOT com>

Greetings,

After further research and RTFM, I have discovered that my
parameter expansion problems lie with 'ash', not 'bash' as I
previously thought.

The comment that highlighted my mistake was:

    Note that Cygwin comes with two shells: bash.exe and sh.exe, which
    is based on ash. The system is faster when ash is used as the
    non-interactive shell. In case of trouble with ash make sh.exe
    point to bash.exe.

found in:

    http://sourceware.cygnus.com/cygwin/cygwin-ug-net/setup-dir.html

And, indeed, using 'bash' resolves my issue.

Thanks,
Bart King

--------- Begin forwarded message ----------
From: DBKing
To: cygwin AT SourceWare DOT cygnus DOT com
Subject: B20:  bash parameter expansion difficulties
Date: Tue, 26 Oct 1999 15:30:27 CDT

Greetings,

I am having trouble with the '%%' operator when doing parameter
expansion in 'bash'.  Below is the behavior I see:

	$ echo $TERM
	pcterm
	$ echo ${TERM%%rm}
	pct
	$ echo ${TERM##pc}
	term
	$

I had expected the result of "${TERM%%rm}" to be "pcte".  Alas,
it is not so.  Note, however, that the "##" operator does work
as I expect it to.

Perhaps someone can tell me whether the difficulty lies with the
user (myself and my expectations), with the system configuration,
or with the the program (bash).

To show my system configuration, I have attached the output from
'cygcheck -s -v -r' at the end of this note.

Thanks to anyone who can shed some light on my questions.

Enjoy,
Bart King
______________________________________________________________________
D. B. (Bart) King                 mailto:DBKing AT Juno DOT com
16500 Lauder Lane, Suite 11101    mailto:PattiKing AT Juno DOT com
Dallas, TX 75248-1766
972-380-1571 (home)               972-497-4482 (work)

----- cygcheck.out -----
Cygnus Win95/NT Configuration Diagnostics
Current System Time: Tue Oct 26 09:17:31 1999

Win95 Ver 4.0 build 67109814 

Path:	/UTILITY
	/BIN
	/CYGNUS/CYGWIN~1/H-I586~1/BIN
	/HP/I/MS/OFF97PRO/32.0/OFFICE
	/WB
	/WINDOWS/COMMAND
	/WINDOWS
	/DOS

SysDir: C:\WINDOWS\SYSTEM
WinDir: C:\WINDOWS

HOME = `/dbk'
MAKE_MODE = `UNIX'

!C: = `C:\develop\fina\ADS_ENG'
TMP = `C:\WINDOWS\TEMP'
WINBOOTDIR = `C:\WINDOWS'
PROMPT = `$p$g'
COMSPEC = `C:\WINDOWS\COMMAND.COM'
OS_BIN = `C:\WINDOWS\COMMAND;C:\WINDOWS;C:\DOS'
TEMP = `C:\TEMP'
PROTMAN = `C:\WINDOWS\SYSTEM\WINA20.386'
SOUND = `C:\SB16'
MIDI = `SYNTH:1 MAP:E'
ROOTDIR = `c:'
ZSHROOT = `c:/'
TMPDIR = `c:/tmp'
TMPPREFIX = `c:/tmp/zsh'
LOGNAME = `dbk'
ENV = `c:/dbk/environ.ksh'
DOSHOME = `c:\dbk'
ZDOTDIR = `c:/dbk/zdotdir'
TERM = `pcterm'
ZSH_ISWIN95 = `YES'
CYGNUS_BIN = `C:\CYGNUS\CYGWIN~1\H-I586~1\BIN'
VIM = `C:\VIM-5.3'
OFFICE_BIN = `C:\HP\I\MS\OFF97PRO\32.0\OFFICE'
TXOBIN = `C:\WB'
TXOINC = `C:\WB\INCL_480'
TXOLIB = `C:\WB\LIB24'
TXOCMD = `-Vp4.1'
CV = `C:\WB\EM_CNV24'
INCLUDE = `C:\WB\INCL_480'
DEPT = `N:\Verifone\Petcaps'
PERSONAL = `C:\Windows'
INFONET = `K:'
WINDIR = `C:\WINDOWS'
BLASTER = `A220 I5 D1 H6 P330 T6'
CMDLINE = `cygcheck -s -v -r '

HKEY_CURRENT_USER\Software\Cygnus Solutions
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL setup
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL setup\b15.0
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\00
  (default) = `C:'
  unix = `/'
  fbinary = 0x00000000
  fsilent = 0x00000000
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Cygnus
Cygwin B20
  (default) = `C:\WINDOWS\IsUninst.exe -fc:\cygnus\cygwin-b20\Uninst.isu'
  DisplayName = `Cygwin B20'
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin B20
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin B20\B20.1
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\GNUPro
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\GNUPro\i586-cygwin32
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus
Solutions\GNUPro\i586-cygwin32\i586-cygwin32
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus
Solutions\GNUPro\i586-cygwin32\i586-cygwin32\cygwin-B20.1
  (default) = `c:\cygnus\cygwin-b20'
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\00
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\01
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\02
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\03
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\04
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\05
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\06
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\07
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\08
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\09
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\0A
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\0B
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\0C
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\0D
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\0E
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\0F
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\10
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\11
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\12
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\13
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\14
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\15
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\16
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\17
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\18
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\19
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\1A
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\1B
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\1C
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL
setup\b15.0\mounts\1D

a:\ fd           N/A    N/A                    
c:\ hd  FAT      N/A    N/A CP    UN           BART_KING
d:\ cd  CDFS     N/A    N/A CP                 Audio CD
e:\ fd           N/A    N/A                    
i:\ net NTFS     N/A    N/A CP CS UN PA FC     Users & Dep
j:\ net NTFS     N/A    N/A CP CS UN PA FC     Infonet
k:\ net NTFS     N/A    N/A CP CS UN PA FC     Infonet
m:\ net NTFS     N/A    N/A CP CS UN PA FC     
n:\ net NTFS     N/A    N/A CP CS UN PA FC     Users & Dep

C:    /        native  text!=binary

Found: C:\BIN\bash.exe
Found: C:\CYGNUS\CYGWIN~1\H-I586~1\BIN\bash.exe
Warning: C:\BIN\bash.exe hides C:\CYGNUS\CYGWIN~1\H-I586~1\BIN\bash.exe
Found: \bin\bash.exe
Warning: C:\BIN\bash.exe hides \bin\bash.exe
Found: C:\BIN\cat.exe
Found: C:\CYGNUS\CYGWIN~1\H-I586~1\BIN\cat.exe
Warning: C:\BIN\cat.exe hides C:\CYGNUS\CYGWIN~1\H-I586~1\BIN\cat.exe
Found: \bin\cat.exe
Warning: C:\BIN\cat.exe hides \bin\cat.exe
Not Found: cpp (good!)
Found: C:\BIN\find.exe
Found: C:\CYGNUS\CYGWIN~1\H-I586~1\BIN\find.exe
Warning: C:\BIN\find.exe hides C:\CYGNUS\CYGWIN~1\H-I586~1\BIN\find.exe
Found: C:\WINDOWS\COMMAND\find.exe
Warning: C:\BIN\find.exe hides C:\WINDOWS\COMMAND\find.exe
Found: \bin\find.exe
Warning: C:\BIN\find.exe hides \bin\find.exe
Found: C:\CYGNUS\CYGWIN~1\H-I586~1\BIN\gcc.exe
Found: C:\CYGNUS\CYGWIN~1\H-I586~1\BIN\gdb.exe
Found: C:\CYGNUS\CYGWIN~1\H-I586~1\BIN\ld.exe
Found: C:\BIN\ls.exe
Found: C:\CYGNUS\CYGWIN~1\H-I586~1\BIN\ls.exe
Warning: C:\BIN\ls.exe hides C:\CYGNUS\CYGWIN~1\H-I586~1\BIN\ls.exe
Found: \bin\ls.exe
Warning: C:\BIN\ls.exe hides \bin\ls.exe
Found: C:\CYGNUS\CYGWIN~1\H-I586~1\BIN\make.exe
Found: C:\BIN\sh.exe
Found: C:\CYGNUS\CYGWIN~1\H-I586~1\BIN\sh.exe
Warning: C:\BIN\sh.exe hides C:\CYGNUS\CYGWIN~1\H-I586~1\BIN\sh.exe
Found: \bin\sh.exe
Warning: C:\BIN\sh.exe hides \bin\sh.exe

  371k 1998/12/01 C:\CYGNUS\CYGWIN~1\H-I586~1\BIN\cygtcl80.dll - os=4.0
img=1.0 sys=4.0
                  "cygtcl80.dll" v0.0 ts=1998/12/1 2:25
    5k 1998/12/01 C:\CYGNUS\CYGWIN~1\H-I586~1\BIN\cygtclpip80.dll -
os=4.0 img=1.0 sys=4.0
   10k 1998/12/01 C:\CYGNUS\CYGWIN~1\H-I586~1\BIN\cygtclreg80.dll -
os=4.0 img=1.0 sys=4.0
                  "cygtclreg80.dll" v0.0 ts=1998/12/1 2:25
  600k 1998/12/01 C:\CYGNUS\CYGWIN~1\H-I586~1\BIN\cygtk80.dll - os=4.0
img=1.0 sys=4.0
                  "cygtk80.dll" v0.0 ts=1998/12/1 2:28
  446k 1998/12/04 C:\CYGNUS\CYGWIN~1\H-I586~1\BIN\cygwin1.dll - os=4.0
img=1.0 sys=4.0
                  "cygwin1.dll" v0.0 ts=1998/12/3 22:39
Use -h to see help about each section
--------- End forwarded message ----------

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Delivered-To:	mailing list cygwin AT sourceware DOT cygnus DOT com
To:	cygwin AT sourceware DOT cygnus DOT com
Date:	Sun, 31 Oct 1999 14:29:52 CST
Subject:	FW: B20: 'ash' (not bash) parameter expansion difficulties
Message-ID:	<19991031.154514.2567.0.DBKing@juno.com>
X-Mailer:	Juno 1.49
X-Juno-Line-Breaks:	0-122,124-128,130-137,139,141-144,146,148,150,152,
	154,156,158,160,162,164,166,168,170,172,174,176,178,180,182,184,
	186,188,190,192,194,196,198,200,202,204,206-252,254-255,257,
	259-260,262-263,265-268
From:	David B King <dbking AT juno DOT com>