You can display the Commandline's Help content using the following (on Windows for example):
Talend-Studio-win-x86_64.exe -nosplash -application org.talend.commandline.CommandLine -consoleLog -data commandline-workspace help > c:\temp\cmdline_help.txt
The above will output (redirect) the help into c:\temp\cmdline_help.txt (for example).
The output contains the full commands.
When I execute this command, there are an other Command window that opens and the file is empty.
If someone can have a solution ?
You will get more help with your question if you post it to one of the Community's discussion boards. Or if you need technical help, please contact the Support team at https://www.talend.com/services/technical-support/.