'\" t .\" Title: crystal-play .\" Author: [see the "AUTHOR(S)" section] .\" Generator: Asciidoctor 2.0.26 .\" Date: 2026-07-23 .\" Manual: Crystal Compiler Command Line Reference Guide .\" Source: crystal 1.21.0 .\" Language: English .\" .TH "CRYSTAL\-PLAY" "1" "2026-07-23" "crystal 1.21.0" "Crystal Compiler Command Line Reference Guide" .ie \n(.g .ds Aq \(aq .el .ds Aq ' .ss \n[.ss] 0 .nh .ad l .de URL \fI\\$2\fP <\\$1>\\$3 .. .als MTO URL .if \n[.g] \{\ . mso www.tmac . am URL . ad l . . . am MTO . ad l . . . LINKSTYLE blue R < > .\} .SH "NAME" crystal-play \- Run the Crystal playground .SH "SYNOPSIS" .sp \fBcrystal play\fP [options] [file] .SH "DESCRIPTION" .sp Starts the \fBcrystal\fP playground server on port 8080, by default. .SH "OPTIONS" .sp \fB\-p\fP \fIPORT\fP, \fB\-\-port\fP \fIPORT\fP .RS 4 Run the playground on the specified port. Default is 8080. .RE .sp \fB\-b\fP \fIHOST\fP, \fB\-\-binding\fP \fIHOST\fP .RS 4 Bind the playground to the specified IP. .RE .sp \fB\-v\fP, \fB\-\-verbose\fP .RS 4 Display detailed information of the executed code. .RE