Using an Installation Script

I need to install the Japanese font pack for Adobe Acrobat Reader. It comes with installation instructions which looks like a script to run in terminal - but I have no idea about Linux code or script! What do you do with it? Can you just paste it in? Appreciate any help. Here is the script:

#!/bin/sh
#
# Install Script for Acrobat Language kit
#
# Copyright (c)1998 Adobe Systems Incorporated
# All Rights Reserved
#
##########################################################################

success=0
failure=1

##########################################################################

yesno()
{
msg="$1"
def="$2"

while : ; do
printf "$msg [$def]"
read answer
if [ "$answer" ] ; then
case "$answer" in
y|Y|yes|YES)
return 0
;;
n|N|no|NO)
return 1
;;
*)
printf "ERROR: Invalid response, expected %s or %s." "\"yes\"" "\"no\""
continue
;;
esac
else
if [ "$def" = "y" ]
then
return 0
else
return 1
fi
fi
done
}

##########################################################################

FindDistFiles()
{
# Get the filenames:
for i in ${ScriptDirectory}/* ; do
if [ -f "$i" ] ; then
case $i in
*/licread.txt*|*/LICREAD.TXT*) LicenseFile="$i" ;;
*/langcom.tar*|*/LANGCOM.TAR*) LangComTar="$i" ;;
*/langchs.tar*|*/LANGCHS.TAR*) LangCHSTar="$i" ;;
*/langcht.tar*|*/LANGCHT.TAR*) LangCHTTar="$i" ;;
*/langjpn.tar*|*/LANGJPN.TAR*) LangJPNTar="$i" ;;
*/langkor.tar*|*/LANGKOR.TAR*) LangKORTar="$i" ;;
*/bincom.tar*|*/BINCOM.TAR*) BinaryCOMTar="$i" ;;
*/install*|*/INSTALL*) ;;
esac
fi
done

# Validate the configurations, need at least one lang tar
if [ -z "$LangCHSTar" \
-a -z "$LangCHTTar" \
-a -z "$LangJPNTar" \
-a -z "$LangKORTar" ]
then
return $failure
fi

if [ -z "$LangComTar" ]
then
return $failure
fi

return $success
}

##########################################################################

GetOS()
{
if [ "`type uname`" != "uname not found" ] ; then
OSname=`uname -s`
if [ "$OSname" = "AIX" ] ; then
OSrelease=`uname -a | ( read name host minor major foo ; echo $major.$minor )`
else
OSrelease=`uname -r`
fi
else
OSname=unknown
OSrelease=unknown
fi
}

##########################################################################

OutputWelcome()
{
printf "%s\n" "Welcome to the Asian Language Kit installation."
printf "%s\n" "This installation will not work if you do not have the Unix Adobe Reader version 8.1 installed prior to this installation."
printf "%s\n" "If you do not have Adobe Reader version 8.1 already installed on your system please do so before installing this Asian Language Kit."
}

OutputLicense ()
{
if [ -z "$PAGER" ] || [ "`type $PAGER`" = "$PAGER not found" ]
then
if [ "`type more`" != "more not found" ] ; then
Pager=more
elif [ "`type pg`" != "pg not found" ] ; then
Pager=pg
else
Pager=cat
fi
else
Pager="$PAGER"
fi

if [ ! -f "$LicenseFile" ] ; then
printf "\n%s\n\n" "ERROR: Cannot find license file ... aborting"
exit 1
fi

$Pager "$LicenseFile"

answer=
while [ -z "$answer" ] ; do
printf "Please type %s to accept the terms and conditions of license agreement; Type %s to exit. " "\"accept\"" "\"decline\""
read answer
ucanswer=`echo "${answer}" | tr '[a-z]' '[A-Z]'`
case "$ucanswer" in
"ACCEPT")
;;
"DECLINE")
printf "%s\n\n" "License agreement not accepted ... aborting installation"
exit 1
;;
*)
printf "ERROR: Invalid response, expected %s or %s.\n" "\"accept\"" "\"decline\""
answer=
;;
esac
done
}

##########################################################################

DefaultInstallDir()
{
defdir="/opt"
case "$OSname" in
SunOS)
case "$OSrelease" in
4.1.3*|4.1.4*|4.1C) defdir="/usr" ;;
5.*) defdir="/opt" ;;
esac
;;
HP-UX)
case "$OSrelease" in
*.09.*) defdir="/usr" ;;
*.10.*) defdir="/opt" ;;
*) defdir="/opt" ;;
esac
;;
IRIX|IRIX64)
defdir="/opt"
;;
AIX)
defdir="/usr/lpp"
;;
esac

echo "$defdir"
}

TestInstallDir()
{
dir="$1"

if [ "`expr "X$dir" : 'X/'`" != 2 ]
then
printf "%s\n" "ERROR: directory must be an absolute path."
return $failure
fi

if [ ! -d "$dir" ]
then
printf "ERROR: Directory %s does not exist.\n" "\"$dir\""
return $failure
fi

if [ ! -d "$dir/Adobe/Reader8/Reader" -o ! -d "$dir/Adobe/Reader8/Resource" ]
then
return $failure
fi

return $success
}

GetInfo()
{
var="$1"
test="$2"
default="$3"
tagline="$4"
val=""

while [ -z "$val" ]
do
printf "${tagline}" "$default"

read ans
var=`echo $ans | cut -d "\"" -f 2`

case "$var" in
~*)
if [ -f /bin/csh -a -x /bin/csh ] ; then
var=`/bin/csh -c "echo $var"`
fi
;;
../*|./*)
var=`pwd`/"${var}"
;;
*)
;;
esac
eval var=\"${var}\"
ans=$var

if [ -z "$ans" ]
then
ans="$default"
fi

if $test "$ans"
then
val="$ans"
fi
done

eval InstallDir=\"$val\"
}

GetInstallInfo()
{
InstallDir="`DefaultInstallDir`"

GetInfo InstallDir TestInstallDir "$InstallDir" "Enter the location where you installed the Adobe Reader [%s] "
}

##########################################################################

ExtractFiles ()
{

prev_directory="`pwd 2> /dev/null`"
cd "$1"

case "`uname -s`" in
Linux)
tar --no-same-owner -xpf "$2" ;;
HP-UX)
tar xfo "$2" ;;
*)
tar xpfo "$2" ;;
esac

cd "$prev_directory"

}


InstallFiles ()
{
msg="$1"
install="$2"
shift
shift

for i in "$@" ; do
if [ "$i" ] ; then
if [ "$msg" ] ; then
printf "\n%s\n" "$msg"
msg=""
fi
ExtractFiles "$install" "$i"
fi
done

if [ -z "$msg" ] ; then
printf "%s\n" "Done"
fi
}

InstallLang()
{
ResourceDir="$InstallDir"

InstallFiles "Installing Common binaries ... " "$InstallDir" "$BinaryCOMTar"
InstallFiles "Installing Common resources ... " "$ResourceDir" "$LangComTar"
InstallFiles "Installing Simplified Chinese language resources ... " "$ResourceDir" "$LangCHSTar"
InstallFiles "Installing Traditional Chinese language resources ... " "$ResourceDir" "$LangCHTTar"
InstallFiles "Installing Japanese language resources ... " "$ResourceDir" "$LangJPNTar"
InstallFiles "Installing Korean language resources ... " "$ResourceDir" "$LangKORTar"
}

##############################################################

#
# Initialization:
#

umask 022

ScriptName=`basename $0`
CurrentDirectory=`pwd`
ScriptDirectory=`dirname $0`
case "${ScriptDirectory}" in
/*) ;;
.) ScriptDirectory="$CurrentDirectory" ;;
*) ScriptDirectory="$CurrentDirectory"/"$ScriptDirectory" ;;
esac

GetOS

FindDistFiles
if [ $? != $success ]
then
printf "%s\n\n" "ERROR: Could not find distribution ... aborting"
exit 1
fi

OutputWelcome
if yesno "Continue installation? " "y"
then
:
else
printf "\n"
exit 1
fi

OutputLicense

GetInstallInfo

InstallLang

printf "%s\n" "Installation completed."
exit 0