/** 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 names = argv.slice(1).filter((a) => !a.startsWith('-'))
  if (!names.length) {
    for (const k of Object.keys(e).sort()) {
      ctx.console.log(k + '=' + (e[k] ?? ''))
    }
    return
  }
  for (const n of names) {
    if (e[n] != null) ctx.console.log(e[n])
    else ctx.exitCode = 1
  }
}