RPM self installer using rpm -Uvh

selfinstaller.bzx

#!/bin/sh                                                                       
# A self-extracting installer for RPMs                                          
#                                                                               
# To create: make a gzip-compressed tarball of RPMs (with no subdirectory),        
# convert to base64, then concatenate onto the end of this file::               
#                                                                               
#   cd /some/directory/of/rpm/files                                             
#   tar -cz *.rpm | base64 -w0 >> selfinstaller.bzx                             
                                                                                
main() {                                                                        
    echo -e "\nSelf Extracting Installer\n"                                     
                                                                                
    TMPDIR=`mktemp -d /tmp/selfextract.XXXXXX`                                  
                                                                                
    trap 'rm -rf '$TMPDIR SIGINT SIGTERM EXIT                                   
                                                                                
    ARCHIVE=`awk '/^__ARCHIVE_BELOW__/ { print NR + 1; exit 0; }' $0`           
                                                                                
    tail -n+$ARCHIVE $0 | base64 -d | tar -C $TMPDIR -xz || \                   
        { echo "Bad archive. Exiting."; return 1; }                             
                                                                                
    echo "Installing:"                                                          
    find $TMPDIR -name '*rpm' -print | awk -F/ '{ print $NF } END { print }'       
                                                                                
    #yum localinstall --nogpgcheck -q -y $TMPDIR/*rpm                           
    rpm -Uvh $TMPDIR/*rpm                                                       
                                                                                
    return $?                                                                   
}                                                                               
                                                                                
main "$@"                                                                       
exit $?                                                                         
                                                                                
__ARCHIVE_BELOW__

This has trailing whitespace that breaks the script. Use this version instead.