[2026-05-29] hermes kraken+eagle+deployment patterns, htpc magic4pc+steam emulators, tv luna-send

2026-05-29 03:03:06 +06:00
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+---
+title: WebOS TV — luna-send via SSH
+created: '2026-05-29'
+updated: '2026-05-29'
+type: tech
+namespace: family
+tags: [htpc, how-to, pitfalls]
+sources:
+  - family/how-to/tv-luna-send.md
+  - family/how-to/htpc-webos-luna.md
+confidence: medium
+related:
+  - "[[tech/htpc-magic4pc]]"
+  - "[[tech/htpc-kodi-layout]]"
+---
+
+# WebOS TV — luna-send via SSH
+
+`luna-send` on WebOS writes output to the TTY, not stdout. SSH without a
+PTY produces no output. The `script(1)` workaround captures output via a
+pseudo-TTY.
+
+TV IP: `192.168.1.75` (aliases: `root@LGwebOSTV`, `root@tv`).
+
+## The Problem
+
+```bash
+ssh root@192.168.1.75 "luna-send -n 1 -f luna://..."   # → silent
+ssh -t root@192.168.1.75 "luna-send -n 1 -f luna://..."  # → still silent
+```
+
+Root cause: `luna-send` detects whether its stdout is a TTY and refuses to
+write to a pipe.
+
+## The Fix: script(1)
+
+```bash
+ssh root@192.168.1.75 \
+  "script -q -c \"luna-send -n 1 -f luna://com.webos.applicationManager/running '{}'\" \
+  /tmp/o.txt; cat /tmp/o.txt"
+```
+
+`script(1)` allocates a pseudo-TTY and records output to `/tmp/o.txt`.
+The wrapper then reads the file, filters the Script header/footer lines,
+and removes the temp file.
+
+## Wrapper: tv-luna-send.sh
+
+Location: `~/Automation/tv-luna-send.sh` on Eagle.
+
+```bash
+# Usage (same flags as luna-send)
+~/Automation/tv-luna-send.sh [luna-send flags] luna://service/method 'json'
+
+# List running apps
+~/Automation/tv-luna-send.sh \
+  -n 1 -f luna://com.webos.service.applicationmanager/running '{}'
+
+# Close an app
+~/Automation/tv-luna-send.sh \
+  -n 1 -f luna://com.webos.service.applicationmanager/closeByAppId \
+  '{"id":"me.wouterdek.magic4pc"}'
+
+# Launch an app
+~/Automation/tv-luna-send.sh \
+  -n 1 -f luna://com.webos.applicationManager/launch \
+  '{"id":"me.wouterdek.magic4pc"}'
+
+# Query magic4pc service status
+~/Automation/tv-luna-send.sh \
+  -n 1 -f luna://me.wouterdek.magic4pc.service/query '{}'
+```
+
+Set `TV_HOST` env to override the default target (`root@LGwebOSTV`).
+DNS resolves via home router at `192.168.1.1`.
+
+## Common Luna URIs
+
+| URI | Purpose |
+|-----|---------|
+| `.../applicationmanager/running` | List running apps |
+| `.../applicationmanager/closeByAppId` | Close app by ID |
+| `.../appInstallService/dev/install` | Install IPK (subscribe) |
+| `.../appInstallService/dev/remove` | Remove app |
+| `.../applicationManager/launch` | Launch app |
+| `.../applicationManager/getForegroundAppInfo` | Get active app |
+| `...magic4pc.service/query` | Magic4pc service status |
+
+Full service prefix: `com.webos.service.applicationmanager`,
+`com.webos.appInstallService`, `com.webos.applicationManager`.
+
+## Limitation: Subscribe Mode (-i)
+
+`luna-send -i` (infinite subscribe, used for `dev/install`) does **not**
+work through the wrapper — it never terminates normally. The
+`magic4pc/webos/deploy.sh` handles install directly via `ssh+script` with
+inline polling for `"state":"installed"`.
+
+## Where Used
+
+`magic4pc/webos/deploy.sh` — close, remove, and launch steps in the deploy
+pipeline. See [[tech/htpc-magic4pc]] for the full magic4pc build and deploy
+workflow.