You might potentially be able to modify the install.sh and then run it locally, or place it on a server of your own and execute it in a similar fashion, but it will need to be modified for the platform and version at the very least. However, according to:
http://wiki.opscode.com/display/chef/Fast+Start+Guide+for+Windows
It looks like you can do this following a different method, it does state the following:
Operating System Chef runs on many popular Unix and Linux platforms as well as Mac OSX and Windows. We will describe how to set
up using Windows 2008 R2 as a workstation and a client, but these are
general directions that will also apply to Windows 7. These directions
are known to not work for Windows Server 2003 or on systems that have
spaces in the %HOMEPATH%. For instructions on these, see the
workstation installation page or the client installation page for
Windows.
I assume that possibly the reason you are looking to execute it with bash is to get a more automated install. If the install script is too difficult to modify you could potentially use something more windows-oriented to automate the install according to the guidelines in that link.
By the way, I tried using the same method as you did and received the same message, looking at install.sh you have these lines:
machine=$(echo -e `uname -m`)
# Retrieve Platform and Platform Version
if [ -f "/etc/lsb-release" ] && grep -q DISTRIB_ID /etc/lsb-release;
then
platform=$(grep DISTRIB_ID /etc/lsb-release | cut -d "=" -f 2 | tr '[A-Z]' '[a-z]')
platform_version=$(grep DISTRIB_RELEASE /etc/lsb-release | cut -d "=" -f 2)
elif [ -f "/etc/debian_version" ];
then
platform="debian"
platform_version=$(echo -e `cat /etc/debian_version`)
elif [ -f "/etc/redhat-release" ];
then
platform=$(sed 's/^\(.\+\) release.*/\1/' /etc/redhat-release | tr '[A-Z]' '[a-z]')
platform_version=$(sed 's/^.\+ release \([.0-9]\+\).*/\1/' /etc/redhat-release)
# If /etc/redhat-release exists, we act like RHEL by default
if [ "$platform" = "fedora" ];
then
# Change platform version for use below.
platform_version="6.0"
fi
platform="el"
elif [ -f "/etc/system-release" ];
then
platform=$(sed 's/^\(.\+\) release.\+/\1/' /etc/system-release | tr '[A-Z]' '[a-z]')
platform_version=$(sed 's/^.\+ release \([.0-9]\+\).*/\1/' /etc/system-release | tr '[A-Z]' '[a-z]')
# amazon is built off of fedora, so act like RHEL
if [ "$platform" = "amazon linux ami" ];
then
platform="el"
platform_version="6.0"
fi
# Apple OS X
elif [ -f "/usr/bin/sw_vers" ];
then
platform="mac_os_x"
# Matching the tab-space with sed is error-prone
platform_version=$(sw_vers | awk '/^ProductVersion:/ { print $2 }')
major_version=$(echo $platform_version | cut -d. -f1,2)
case $major_version in
"10.6") platform_version="10.6" ;;
"10.7") platform_version="10.7" ;;
"10.8") platform_version="10.7" ;;
*) echo "No builds for platform: $major_version"
report_bug
exit 1
;;
esac
# x86_64 Apple hardware often runs 32-bit kernels (see OHAI-63)
x86_64=$(sysctl -n hw.optional.x86_64)
if [ $x86_64 -eq 1 ]; then
machine="x86_64"
fi
elif [ -f "/etc/release" ];
then
platform="solaris2"
machine=$(/usr/bin/uname -p)
platform_version=$(/usr/bin/uname -r)
elif [ -f "/etc/SuSE-release" ];
then
if grep -q 'Enterprise' /etc/SuSE-release;
then
platform="sles"
platform_version=$(awk '/^VERSION/ {V = $3}; /^PATCHLEVEL/ {P = $3}; END {print V "." P}' /etc/SuSE-release)
else
platform="suse"
platform_version=$(awk '/^VERSION =/ { print $3 }' /etc/SuSE-release)
fi
fi
platform="windows"
if [ "x$platform" = "x" ];
then
echo "Unable to determine platform version!"
report_bug
exit 1
fi
# Mangle $platform_version to pull the correct build
# for various platforms
major_version=$(echo $platform_version | cut -d. -f1)
case $platform in
"el")
case $major_version in
"5") platform_version="5" ;;
"6") platform_version="6" ;;
esac
;;
"debian")
case $major_version in
"5") platform_version="6";;
"6") platform_version="6";;
esac
;;
esac
if [ "x$platform_version" = "x" ];
then
echo "Unable to determine platform version!"
report_bug
exit 1
fi
if [ $use_shell = 1 ];
then
shell_filename
else
case $platform in
"ubuntu") deb_filename ;;
"debian") deb_filename ;;
"el") rpm_filename ;;
"suse") rpm_filename ;;
"sles") rpm_filename ;;
"fedora") rpm_filename ;;
"solaris2") svr4_filename ;;
*) shell_filename ;;
esac
fi
echo "Downloading Chef $version for ${platform}..."
url="https://opscode.com/chef/download?v=${version}&prerelease=${prerelease}&p=${platform}&pv=${platform_version}&m=${machine}"
and the last line there, on line 199 of that install.sh script:
https://opscode.com/chef/download?v=${version}&prerelease=${prerelease}&p=${platform}&pv=${platform_version}&m=${machine}
I could not find a url that would work for windows 7 yet but if there is one, you can plug in the details there and it should at least be able to begin the install.
