bash: command substitution:syntax error near unexpected token `|'

Question

I am using a simple command to change password for user in remote linux machine by using Java Jsch code. My command is

command = "echo -ne "+userPassword+" \n echo "+userPassword+" \n | smbpasswd -a -s "+userId;
((ChannelExec)channel).setPty(true);
((ChannelExec)channel).setCommand("sudo -S -p '' "+command);

But it is returning error saying,

 bash: command substitution: line 2: syntax error near unexpected token `|' bash: command substitution: line 2: ` | smbpasswd -a -s TestUserNew' sudo: JX7MuQoTJX7MuQoT: command not found 

I am confused here as this command runs in Linux. Can someone please help me fix this?

Thanks, Gourab

Answer 1

This command works on the command line:

(echo "wxfLW2qJ"; echo "wxfLW2qJ") | sudo smbpasswd tester

Note that sudo is used for the smbpasswd command. Furthermore the brackets around the first part create a subshell which seems to be important.

Answer 2

I have solved the problem.

Original code is,

command = "echo -ne \\""+userPassword+"\\n"+userPassword+"\\n | sudo smbpasswd -a -s "+userId;

And the updated code is,

command = "echo -ne \\""+userPassword+"\\n"+userPassword+"\\n\\" | sudo smbpasswd -a -s "+userId;

Thanks everyone I have got lot of clues to solve this issue.