hangs if no tty input is provided

[Rares Vernica]

Binary package hint: pssh

If parallel-ssh is used in a script and no input is provided, it hangs.

Steps to reproduce:

$ echo localhost > hosts.txt
$ cat > script.sh
#!/bin/bash
parallel-ssh -h hosts.txt uptime
$ bash script.sh

The script hangs.

Workaround:

$ cat > script.sh
#!/bin/bash
echo | parallel-ssh -h hosts.txt uptime
$ bash script.sh
[1] 17:06:52 [SUCCESS] localhost 22
$

Other info:

$ lsb_release -rd
Description: Ubuntu 9.10
Release: 9.10

$ apt-cache policy pssh
pssh:
  Installed: 1.4.3-1
  Candidate: 1.4.3-1
  Version table:
 *** 1.4.3-1 0
        500 http://us.archive.ubuntu.com karmic/universe Packages
        100 /var/lib/dpkg/status

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[John Ellson (ellson)]

Possibly related: #549117