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.TH NODE 1 2016 Node.js Node.js
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.\" This is a man page comment.
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.\" Man page syntax (actually roff syntax) is somewhat obscure, but the
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.\" important part is is that .<letter> specifies <letter>'s syntax for that
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.\" line, and \f<letter> specifies it for the characters that follow.
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.\" .B Bold line
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.\" .I Italic line (Rendered as underlined text in terminals)
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.\" .BI Alternating bold/italics without spaces between arguments.
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.\" Use `\ ` to include an "unpaddable" (literal) space in the output.
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.\" .RI Alternating roman/italic
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.\" See http://liw.fi/manpages/ for an overview, or http://www.troff.org/54.pdf
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.\" for detailed language reference.
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.\" Macro to display an underlined URL in bold
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.de ur
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.nr CF \\n(.f
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.ft 4
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\\$1
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.ft \\n(CF
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..
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.SH NAME
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node \- Server-side JavaScript runtime
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.SH SYNOPSIS
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.B node
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.RI [ options ]
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.RI [ v8\ options ]
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.RI [ script.js \ |
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.B -e
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.RI \&" script \&"]
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.B [--]
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.RI [ arguments ]
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.br
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.B node debug
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.RI [ script.js " | "
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.B \-e
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.RI \&" script \&"\ |
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.IR <host>:<port> ]
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.I ...
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.br
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.B node
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.RB [ \-\-v8-options ]
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Execute without arguments to start the REPL.
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.SH DESCRIPTION
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Node.js is a set of libraries for JavaScript which allows it to be used outside
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of the browser. It is primarily focused on creating simple, easy to build
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network clients and servers.
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.SH OPTIONS
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.TP
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.BR \-v ", " \-\-version
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Print node's version.
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.TP
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.BR \-h ", " \-\-help
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Print node command line options.
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The output of this option is less detailed than this document.
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.TP
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.BR \-e ", " \-\-eval " " \fR"\fIscript\fR"
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Evaluate the following argument as JavaScript.
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.TP
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.BR \-p ", " \-\-print " " \fR"\fIscript\fR"
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Identical to \fB-e\fR but prints the result.
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.TP
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.BR \-c ", " \-\-check
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Syntax check the script without executing.
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.TP
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.BR \-i ", " \-\-interactive
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Open the REPL even if stdin does not appear to be a terminal.
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.TP
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.BR \-r ", " \-\-require " " \fImodule\fR
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Preload the specified module at startup. Follows `require()`'s module resolution
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rules. \fImodule\fR may be either a path to a file, or a node module name.
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.TP
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.BR \-\-inspect \fI[=host:port]\fR
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Activate inspector on host:port. Default is 127.0.0.1:9229.
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V8 Inspector integration allows attaching Chrome DevTools and IDEs to Node.js
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instances for debugging and profiling. It uses the Chrome Debugging Protocol.
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.TP
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.BR \-\-inspect-brk \fI[=host:port]\fR
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Activate inspector on host:port and break at start of user script.
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.TP
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.BR \-\-no\-deprecation
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Silence deprecation warnings.
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.TP
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.BR \-\-trace\-deprecation
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Print stack traces for deprecations.
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.TP
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.BR \-\-throw\-deprecation
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Throw errors for deprecations.
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.TP
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.BR \-\-no\-warnings
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Silence all process warnings (including deprecations).
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.TP
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.BR \-\-trace\-warnings
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Print stack traces for process warnings (including deprecations).
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.TP
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.BR \-\-redirect\-warnings=\fIfile\fR
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Write process warnings to the given file instead of printing to stderr.
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.TP
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.BR \-\-trace\-sync\-io
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Print a stack trace whenever synchronous I/O is detected after the first turn
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of the event loop.
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.TP
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.BR \-\-trace\-events\-enabled
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Enables the collection of trace event tracing information.
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.TP
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.BR \-\-trace\-event\-categories " " \fIcategories\fR
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A comma separated list of categories that should be traced when trace event
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tracing is enabled using \fB--trace-events-enabled\fR.
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.TP
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.BR \-\-zero\-fill\-buffers
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Automatically zero-fills all newly allocated Buffer and SlowBuffer instances.
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.TP
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.BR \-\-preserve\-symlinks
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Instructs the module loader to preserve symbolic links when resolving and
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caching modules.
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.TP
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.BR \-\-track\-heap-objects
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Track heap object allocations for heap snapshots.
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.TP
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.BR \-\-prof\-process
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Process v8 profiler output generated using the v8 option \fB\-\-prof\fR
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.TP
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.BR \-\-v8\-options
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Print v8 command line options.
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Note: v8 options allow words to be separated by both dashes (\fB-\fR) or
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underscores (\fB_\fR).
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For example, \fB\-\-stack\-trace\-limit\fR is equivalent to
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\fB\-\-stack\_trace\_limit\fR
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.TP
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.BR \-\-v8\-pool\-size =\fInum\fR
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Set v8's thread pool size which will be used to allocate background jobs.
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If set to 0 then v8 will choose an appropriate size of the thread pool based
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on the number of online processors. If the value provided is larger than v8's
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max then the largest value will be chosen.
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.TP
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.BR \-\-tls\-cipher\-list =\fIlist\fR
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Specify an alternative default TLS cipher list. (Requires Node.js to be built
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with crypto support. (Default))
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.TP
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.BR \-\-enable\-fips
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Enable FIPS-compliant crypto at startup. (Requires Node.js to be built with
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\fB./configure \-\-openssl\-fips\fR)
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.TP
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.BR \-\-force\-fips
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Force FIPS-compliant crypto on startup. (Cannot be disabled from script code.)
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(Same requirements as \fB\-\-enable\-fips\fR)
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.TP
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.BR \-\-openssl\-config =\fIfile\fR
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Load an OpenSSL configuration file on startup. Among other uses, this can be
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used to enable FIPS-compliant crypto if Node.js is built with
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\fB./configure \-\-openssl\-fips\fR.
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.TP
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.BR \-\-use\-openssl\-ca,\-\-use\-bundled\-ca
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Use OpenSSL's default CA store or use bundled Mozilla CA store as supplied by
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current NodeJS version. The default store is selectable at build-time.
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Using OpenSSL store allows for external modifications of the store. For most
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Linux and BSD distributions, this store is maintained by the distribution
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maintainers and system administrators. OpenSSL CA store location is dependent on
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configuration of the OpenSSL library but this can be altered at runtime using
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environmental variables.
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The bundled CA store, as supplied by NodeJS, is a snapshot of Mozilla CA store
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that is fixed at release time. It is identical on all supported platforms.
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See \fBSSL_CERT_DIR\fR and \fBSSL_CERT_FILE\fR.
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.TP
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.BR \-\-icu\-data\-dir =\fIfile\fR
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Specify ICU data load path. (overrides \fBNODE_ICU_DATA\fR)
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.TP
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.BR \-\-\fR
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Indicate the end of node options. Pass the rest of the arguments to the script.
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If no script filename or eval/print script is supplied prior to this, then
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the next argument will be used as a script filename.
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.SH ENVIRONMENT VARIABLES
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.TP
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.BR NODE_DEBUG =\fImodule\fR[,\fI...\fR]
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\',\'\-separated list of core modules that should print debug information.
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.TP
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.BR NODE_DISABLE_COLORS =\fI1\fR
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When set to \fI1\fR, colors will not be used in the REPL.
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.TP
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.BR NODE_EXTRA_CA_CERTS =\fIfile\fR
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When set, the well known "root" CAs (like VeriSign) will be extended with the
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extra certificates in \fIfile\fR. The file should consist of one or more
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trusted certificates in PEM format. A message will be emitted (once) with
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\fBprocess.emitWarning()\fR if the file is missing or misformatted, but any
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errors are otherwise ignored.
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.TP
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.BR NODE_ICU_DATA =\fIfile\fR
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Data path for ICU (Intl object) data. Will extend linked-in data when compiled
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with small\-icu support.
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.TP
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.BR NODE_NO_WARNINGS =\fI1\fR
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When set to \fI1\fR, process warnings are silenced.
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.TP
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.BR NODE_PATH =\fIpath\fR[:\fI...\fR]
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\':\'\-separated list of directories prefixed to the module search path.
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.TP
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.BR NODE_REPL_HISTORY =\fIfile\fR
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Path to the file used to store the persistent REPL history. The default path
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is \fB~/.node_repl_history\fR, which is overridden by this variable. Setting the
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value to an empty string ("" or " ") disables persistent REPL history.
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.TP
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.BR NODE_TTY_UNSAFE_ASYNC =\fI1\fR
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When set to \fI1\fR, writes to stdout and stderr will be non-blocking and
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asynchronous when outputting to a TTY on platforms which support async stdio.
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Setting this will void any guarantee that stdio will not be interleaved or
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dropped at program exit. \fBAvoid use.\fR
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.TP
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.BR OPENSSL_CONF = \fIfile\fR
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Load an OpenSSL configuration file on startup. Among other uses, this can be
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used to enable FIPS-compliant crypto if Node.js is built with
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\fB./configure \-\-openssl\-fips\fR.
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If the
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\fB\-\-openssl\-config\fR
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command line option is used, the environment variable is ignored.
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.TP
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.BR SSL_CERT_DIR = \fIdir\fR
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If \fB\-\-use\-openssl\-ca\fR is enabled, this overrides and sets OpenSSL's directory
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containing trusted certificates.
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.TP
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.BR SSL_CERT_FILE = \fIfile\fR
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If \fB\-\-use\-openssl\-ca\fR is enabled, this overrides and sets OpenSSL's
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file containing trusted certificates.
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.TP
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.BR NODE_REDIRECT_WARNINGS=\fIfile\fR
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Write process warnings to the given file instead of printing to stderr.
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(equivalent to using the \-\-redirect\-warnings=\fIfile\fR command-line
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argument).
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.SH BUGS
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Bugs are tracked in GitHub Issues:
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.ur https://github.com/nodejs/node/issues
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.SH AUTHORS
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Written and maintained by 1000+ contributors:
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.ur https://github.com/nodejs/node/blob/master/AUTHORS
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.SH COPYRIGHT
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Copyright Node.js contributors. Node.js is available under the MIT license.
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Node.js also includes external libraries that are available under a variety
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of licenses. See
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.ur https://github.com/nodejs/node/blob/master/LICENSE
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for the full license text.
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.SH RESOURCES AND DOCUMENTATION
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Website:
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.ur https://nodejs.org/
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Documentation:
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.ur https://nodejs.org/api/
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GitHub repository & Issue Tracker:
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.ur https://github.com/nodejs/node
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Mailing list:
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.ur http://groups.google.com/group/nodejs
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IRC (general questions):
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.ur "chat.freenode.net #node.js"
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(unofficial)
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IRC (Node.js core development):
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.ur "chat.freenode.net #node-dev"
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