Autopackage for bash

[Chen Ming Tien]

In July, I tried installing Lilypond 2.6.0, but the autopackage did not
work. I am running GNU bash 1.14.7(1) under Caldera OpenLinux 2.2.14.

I recently tried again with 2.7.4 and got the same error messages:

===============================================================================
./lilypond-2.7.4.x86.package: [[: command not found
./lilypond-2.7.4.x86.package: [[: command not found
./lilypond-2.7.4.x86.package: [[: command not found
./lilypond-2.7.4.x86.package: [[: command not found
./lilypond-2.7.4.x86.package: [[: command not found
./lilypond-2.7.4.x86.package: [[: command not found
chmod: : No such file or directory
./lilypond-2.7.4.x86.package: [[: command not found
/meta/@lilypond.org/lilypond:2.7.4/apkg-installer: syntax error near unexpected 
token `x=(`'
/meta/@lilypond.org/lilypond:2.7.4/apkg-installer: 
/meta/@lilypond.org/lilypond:2.7.4/apkg-installer: line 14: `        x=(`echo 
$x`)'
===============================================================================

As far as I know, [[ ]] is ksh syntax, not bash syntax.

I would be most grateful to know of a package that works with bash, or of
any other solution.

Thank you.

M. T. Chen