Can't launch debug (sh: 1 [: Linux: unexpected operator)

This appears to be a regression, and someone filed an issue on the main VS Code repo, and the developer just closed it and asked them to file it here. I don't think they did, so:

Platform
4.15.0-33-generic #36~16.04.1-Ubuntu SMP (x64)

Build info
Version: 1.26.1
Commit: 493869ee8e8a846b0855873886fc79d480d342de
Date: 2018-08-16T18:34:20.517Z
Electron: 2.0.5
Chrome: 61.0.3163.100
Node.js: 8.9.3
V8: 6.1.534.41
Architecture: x64

launch.json

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "(gdb) Remote Debug",
            "type": "cppdbg",
            "request": "attach",
            "program": "/usr/src/build/bin/qd",
            "processId": "${command:pickRemoteProcess}",
            "targetArchitecture": "arm",
            "pipeTransport": {
                "debuggerPath": "/usr/bin/gdb",
                "pipeProgram": "/usr/bin/ssh",
                "pipeArgs": ["root@tom"],
                "pipeCwd":"${workspaceFolder}"
            },
            "MIMode": "gdb",
            "setupCommands": [
                {
                    "description": "Enable pretty-printing for gdb",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                }
            ]
        }
    ]
}

Resulting output (says remote-attach)

Linux
sh: 1: [: Linux: unexpected operator
sh: 1: [: Linux: unexpected operator

Start by reproducing the remote-attach configuration from launch.json on the reported Ubuntu environment and inspect where the debug adapter invokes sh. Confirm the fix by launching the same configuration without the “unexpected operator” errors and with remote attach working.