Re: Release candidate 1: /etc/hosts

[Igor Pechtchanski <pechtcha@cs.nyu.edu>]

[-- Attachment #1: Type: TEXT/PLAIN, Size: 1896 bytes --]

On Thu, 12 Sep 2002, Paul Johnston wrote:

> Hi,
> Thanks to Corinna, Joe, Nicholas, Warren and especially Igor, this
> script should now be good enough. I've successfully tested it on XP
> only.

This works on Windows 98 (sort of):

BASH-2.05b$ uname -a
CYGWIN_98-4.10 FAETON 1.3.12(0.54/3/2) 2002-07-06 02:16 i686 unknown
BASH-2.05b$ ./make-etc-links.sh
create symbolic link `/etc/hosts' to `/cygdrive/c/WINDOWS/hosts'
create symbolic link `/etc/protocols' to `/cygdrive/c/WINDOWS/protocol'
create symbolic link `/etc/services' to `/cygdrive/c/WINDOWS/services'
create symbolic link `/etc/networks' to `/cygdrive/c/WINDOWS/networks'
BASH-2.05b$

However, two problems:

1) When the script has run, but created a link to a non-existent file, and
then run again:

BASH-2.05b$ ./make-etc-links.sh
/bin/ln: `/etc/protocols': File exists
BASH-2.05b$ ls /etc/protocols
/etc/protocols
BASH-2.05b$ [ ! -e /etc/protocols ]; echo $?
0
BASH-2.05b$ [ ! -L /etc/protocols ]; echo $?
1
BASH-2.05b$

The -e test apparently fails if the file is a symbolic link to a
non-existent file (is this a bug?).  I've attached the correction.

2) CYGWIN="check_case:strict"
As I suspected earlier, this fails -- the links are created, but an
attempt to cat the files results in "no such file or directory", and an
attempt to save the file after editing results in a write error.  On my
Windows 98, cygwin interprets the filenames for c:\windows\hosts, etc, as
all caps.  I don't know how important this is to pursue.
	Igor
-- 
				http://cs.nyu.edu/~pechtcha/
      |\      _,,,---,,_		pechtcha@cs.nyu.edu
ZZZzz /,`.-'`'    -.  ;-;;,_		igor@watson.ibm.com
     |,4-  ) )-,_. ,\ (  `'-'		Igor Pechtchanski
    '---''(_/--'  `-'\_) fL	a.k.a JaguaR-R-R-r-r-r-.-.-.  Meow!

It took the computational power of three Commodore 64s to fly to the moon.
It takes a 486 to run Windows 95.  Something is wrong here. -- SC sig file

[-- Attachment #2: Type: TEXT/PLAIN, Size: 734 bytes --]

#!/bin/sh
#--
# Create symbolic links from some /etc files to the Windows equivalents
#--

FILES="hosts protocols services networks"

OSNAME=`/bin/uname -s`
WINHOME=`/bin/cygpath -W`

case "$OSNAME" in
  CYGWIN_NT*) WINETC="$WINHOME/system32/drivers/etc" ;;
  CYGWIN_9*|CYGWIN_ME*) WINETC="$WINHOME" ;;
  *) 
    echo "Unknown system type $OSNAME; exiting" >&2
    exit 0
  ;;
esac

if [ ! -d "$WINETC" ]
then
  echo "Directory $WINETC does not exist; exiting" >&2
  exit 0
fi

for FILE in $FILES
do
  if [ ! -e "/etc/$FILE" -a ! -L "/etc/$FILE" ]
  then
    # Windows only uses the first 8 characters
    WFILE=`expr substr "$FILE" 1 8`
    /bin/ln -s -v "$WINETC/$WFILE" "/etc/$FILE"
  fi
done



[-- Attachment #3: Type: TEXT/PLAIN, Size: 348 bytes --]

--- make-etc-links.sh-0.6	2002-09-12 10:08:17.000000000 -0400
+++ make-etc-links.sh	2002-09-12 13:05:02.000000000 -0400
@@ -25,7 +25,7 @@ fi
 
 for FILE in $FILES
 do
-  if [ ! -e "/etc/$FILE" ]
+  if [ ! -e "/etc/$FILE" -a ! -L "/etc/$FILE" ]
   then
     # Windows only uses the first 8 characters
     WFILE=`expr substr "$FILE" 1 8`

[-- Attachment #4: Type: text/plain, Size: 214 bytes --]

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Bug reporting:         http://cygwin.com/bugs.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/