---
name: "random"
section: "3tcl"
platform: "linux"
package: "tcl-memchan"
version: "2.3+dfsg-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/random/3tcl"
---

# random(3tcl)

Create and manipulate randomizer channels

```

```

## NAME

random - Create and manipulate randomizer channels

## SYNOPSIS

package require **Tcl**

package require **memchan**

**random**

```

```

## DESCRIPTION

- **random**

  creates a random channel which absorbs everything written into it and uses it as a seed for a random number generator. This generator is used to create a random sequence of bytes when reading from the channel. It is not possible to seek the channel.

## OPTIONS

Memory channels created by **random** provide one additional option to set or query.

- *-delay ?milliseconds?*

  A **random** channel is always writable and readable. This means that all **fileevent**-handlers will fire continuously.  To avoid starvation of other event sources the events raised by this channel type have a configurable delay. This option is set in milliseconds and defaults to 5.

## SEE ALSO

fifo, fifo2, memchan, null, zero

## KEYWORDS

channel, i/o, in-memory channel, random

## COPYRIGHT

```
Copyright (c) 2004 Pat Thoyts <patthoyts@users.sourceforge.net>
```