/** Shared helpers for drive-resident /bin scripts (prepended before each command). */
function bareStdin(ctx) {
  return typeof ctx.shellStdin === 'string' ? ctx.shellStdin : ''
}

async function run(ctx, argv) {
  const e = ctx.vfs.env
  const u = e.USER || e.LOGNAME || 'guest'
  const uid = e.UID || (e.BARE_OS_IDENTITY === 'guest' ? '65534' : '1000')
  const gid = e.GID || (e.BARE_OS_IDENTITY === 'guest' ? '65534' : '1000')
  const g = e.GROUP || u
  const rest = argv.slice(1)
  const wantG = rest.includes('-g') || rest.includes('--group')
  const wantU = rest.includes('-u') || rest.includes('--user')
  const wantN = rest.includes('-n') || rest.includes('--name')
  if (wantU && wantN) {
    ctx.console.log(u)
    return
  }
  if (wantG && wantN) {
    ctx.console.log(g)
    return
  }
  if (wantU) {
    ctx.console.log(uid)
    return
  }
  if (wantG) {
    ctx.console.log(gid)
    return
  }
  ctx.console.log(
    'uid=' +
      uid +
      '(' +
      u +
      ') gid=' +
      gid +
      '(' +
      g +
      ') groups=' +
      gid +
      '(' +
      g +
      ')'
  )
}