Cygwin Perl system() Invokes exec() Directly?

["Lehr, Matt (GEA, 510425)" <MATT.LEHR@APPL.GE.COM>]

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Title: Cygwin Perl system() Invokes exec() Directly?





Hello,


        Seems like the Cygwin perl system() function calls exec() directly rather than passing the command to the shell?

        For example:


        Under Cygwin perl:
                /usr/bin/perl -e '$x=system("wc < .bashrc");print"$x $!\n";'
        produces the output:
                -1 No such file or directory


        Under ActiveState perl:
                /cygdrive/e/Perl/bin/perl -e '$x=system("wc < .bashrc");print"$x $!\n";'
        produces the output (as expected):
                5       14      93
                0


        Thanks for your efforts...  Version information appears below...


                                - Matt


 


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Cygnus Win95/NT Configuration Diagnostics
Current System Time: Wed Sep 19 15:18:39 2001

WinNT Ver 4.0 build 1381 Service Pack 5

Path:	/usr/local/bin
	/usr/bin
	/bin
	/cygdrive/c/WINNT/system32
	/cygdrive/c/WINNT
	/cygdrive/c/DMI/bin
	/cygdrive/c/NETMANAG.32
	/cygdrive/c/WINNT/System32/WBEM
	/cygdrive/c/WINNT/system32/nls
	/cygdrive/c/WINNT/system32/nls/English
	/cygdrive/z
	/cygdrive/w/W31
	/cygdrive/k/O7.16/BIN
	/cygdrive/k/O7.32/BIN
	Z
	.
	/cygdrive/c/Program Files/DevStudio/Vss/WIN32

SysDir: C:\WINNT\System32
WinDir: C:\WINNT

PWD = `/home/Administrator'
USER = `Administrator'
MAKE_MODE = `unix'
HOME = `/home/Administrator'

NUMBER_OF_PROCESSORS = `1'
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!S: = `S:\'
PS1 = `\[^[]0;\w\a\w\[^[[0m$^[[32m\] '
HOMESHARE = `\\ap1fs01\users'
SMS_LOCAL_DIR_USER = `C:\WINNT'
VISUAL = `emacs'
MACHTYPE = `i686-pc-cygwin'
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PROCESSOR_IDENTIFIER = `x86 Family 6 Model 8 Stepping 10, GenuineIntel'
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HKEY_CURRENT_USER\Software\Cygnus Solutions
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2
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HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/usr/bin
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HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/usr/lib
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HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\Program Options

a:  fd  FAT        1Mb  39% CP    UN           PKBACK# 001
c:  hd  NTFS    7804Mb  16% CP CS UN PA FC     
d:  hd  FAT     4000Mb   2% CP    UN           
e:  hd  FAT     4094Mb  15% CP    UN           
f:  cd           N/A    N/A                    
h:  net NWFS    2051Mb  36% CP                 SYS
k:  net NWFS   67399Mb  91% CP                 USERS
l:  net NWFS   67399Mb  91% CP                 USERS
m:  net NWFS   67399Mb  91% CP                 USERS
n:  net NWFS   67399Mb  91% CP                 USERS
s:  net NWFS   67399Mb  91% CP                 USERS
t:  net NWFS    5000Mb  53% CP                 APPS
w:  net NWFS   67399Mb  91% CP                 USERS
z:  net NWFS    2051Mb  36% CP                 SYS

E:\cygwin\bin  /usr/bin  user    binmode
E:\cygwin\lib  /usr/lib  user    binmode
E:\cygwin  /        user    binmode
c:    /cygdrive/c  user    binmode,noumount
d:    /cygdrive/d  user    binmode,noumount
e:    /cygdrive/e  user    binmode,noumount
h:    /cygdrive/h  user    binmode,noumount
k:    /cygdrive/k  user    binmode,noumount
l:    /cygdrive/l  user    binmode,noumount
m:    /cygdrive/m  user    binmode,noumount
n:    /cygdrive/n  user    binmode,noumount
s:    /cygdrive/s  user    binmode,noumount
t:    /cygdrive/t  user    binmode,noumount
w:    /cygdrive/w  user    binmode,noumount
z:    /cygdrive/z  user    binmode,noumount

Found: E:\cygwin\bin\bash.exe
Found: E:\cygwin\bin\cat.exe
Not Found: cpp (good!)
Found: E:\cygwin\bin\find.exe
Not Found: gcc
Not Found: gdb
Found: E:\cygwin\bin\ld.exe
Found: E:\cygwin\bin\ls.exe
Found: z:\\ls.exe
Warning: E:\cygwin\bin\ls.exe hides z:\\ls.exe
Not Found: make
Not Found: sh

  701k 2001/09/13 E:\cygwin\bin\cygwin1.dll - os=4.0 img=1.0 sys=4.0
                  "cygwin1.dll" v0.0 ts=2001/9/12 23:54
    Cygwin DLL version info:
        dll major: 1003
        dll minor: 3
        dll epoch: 19
        dll bad signal mask: 19005
        dll old termios: 5
        dll malloc env: 28
        api major: 0
        api minor: 46
        shared data: 3
        dll identifier: cygwin1
        mount registry: 2
        cygnus registry name: Cygnus Solutions
        cygwin registry name: Cygwin
        program options name: Program Options
        cygwin mount registry name: mounts v2
        cygdrive flags: cygdrive flags
        cygdrive prefix: cygdrive prefix
        cygdrive default prefix: 
        build date: Wed Sep 12 23:54:31 EDT 2001
        shared id: cygwin1S3

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