/** 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 args = argv.slice(1).filter((a) => !a.startsWith('-'))
  let a = 1
  let step = 1
  let b = 1
  if (args.length === 1) {
    b = parseInt(args[0], 10)
  } else if (args.length === 2) {
    a = parseInt(args[0], 10)
    b = parseInt(args[1], 10)
  } else if (args.length >= 3) {
    a = parseInt(args[0], 10)
    step = parseInt(args[1], 10)
    b = parseInt(args[2], 10)
  }
  if (step === 0 || Number.isNaN(a) || Number.isNaN(b) || Number.isNaN(step)) {
    ctx.console.error('seq: invalid arguments')
    ctx.exitCode = 1
    return
  }
  if (step > 0) {
    for (let x = a; x <= b; x += step) ctx.console.log(String(x))
  } else {
    for (let x = a; x >= b; x += step) ctx.console.log(String(x))
  }
}