---
name: ssh_exec
kind: function
lang: go
domain: infra
version: "1.0.0"
purity: impure
signature: "func SSHExec(conn SSHConn, command string) (string, string, int, error)"
description: "Ejecuta un comando en el host remoto via SSH. Retorna stdout, stderr y exit code separados."
tags: [ssh, exec, remote, command]
uses_functions: []
uses_types: [ssh_conn_go_infra]
returns: []
returns_optional: false
error_type: "error_go_core"
imports: [os/exec]
params:
  - name: conn
    desc: "estructura SSHConn con Host, User, Port, IdentityFile"
  - name: command
    desc: "comando a ejecutar en el host remoto"
output: "tupla (stdout, stderr, exit_code, error) del comando ejecutado"
tested: true
tests: ["echo simple", "captura stderr", "exit code no cero", "comando multilinea"]
test_file_path: "functions/infra/ssh_exec_test.go"
file_path: "functions/infra/ssh_exec.go"
---

## Ejemplo

```go
conn := SSHConn{Host: "192.168.1.100", User: "deploy"}
stdout, stderr, code, err := SSHExec(conn, "df -h /")
if err != nil {
    log.Fatal(err)
}
fmt.Printf("exit=%d\nstdout:\n%s\nstderr:\n%s\n", code, stdout, stderr)
```

## Notas

Retorna stdout y stderr como strings separados mas el exit code. Si el comando remoto falla (exit code != 0), NO retorna error — el exit code indica el fallo. Solo retorna error si ssh no pudo conectar o ejecutar. Usa BatchMode=yes para evitar prompts interactivos.