Create shell script from Extendscript Toolkit - bash

Question

As one of the outputs from an Extendscript, I want to create a shell script which can then be executed by the user. Here is a very basic example:
function createShellScript()
{
var contents = "#!/bin/bash\ndate";
var outputFolder = Folder.selectDialog ("Choose where to save:");
var shFile = new File(outputFolder.absoluteURI + "/shell.sh");
shFile.open("W");
shFile.write(contents);
shFile.close();
}
createShellScript ();
If I take the resulting file (shell.sh), run chmod +x on it to make it exectuable, and then run it, nothing happens.
If, however, I adjust the script above to create the same content but a text file – so it outputs shell.txt open the file, copy the contents into a blank document in a code editor, and save as a .sh file, and then chmod and run it, it works fine.
Why does Extendscript not produce a proper .sh file when using this method?
Thanks for any help.
S

Answer 1

You need to set the line feed characters to unix style. For example, shFile.lineFeed = "Unix";.
function createShellScript()
{
var contents = "#!/bin/bash\ndate";
var outputFolder = Folder.selectDialog ("Choose where to save:");
var shFile = new File(outputFolder.absoluteURI + "/shell.sh");
shFile.open("W");
shFile.lineFeed = "Unix";
shFile.write(contents);
shFile.close();
}
createShellScript ();