diff options
Diffstat (limited to 'doc/api/child_process.md')
| -rw-r--r-- | doc/api/child_process.md | 108 |
1 files changed, 45 insertions, 63 deletions
diff --git a/doc/api/child_process.md b/doc/api/child_process.md index 7a01038d58..929788486d 100644 --- a/doc/api/child_process.md +++ b/doc/api/child_process.md @@ -139,15 +139,16 @@ changes: * `command` {string} The command to run, with space-separated arguments. * `options` {Object} * `cwd` {string} Current working directory of the child process. - * `env` {Object} Environment key-value pairs. + **Default:** `null`. + * `env` {Object} Environment key-value pairs. **Default:** `null`. * `encoding` {string} **Default:** `'utf8'` - * `shell` {string} Shell to execute the command with. - **Default:** `'/bin/sh'` on UNIX, `process.env.ComSpec` on Windows. See - [Shell Requirements][] and [Default Windows Shell][]. + * `shell` {string} Shell to execute the command with. See + [Shell Requirements][] and [Default Windows Shell][]. **Default:** + `'/bin/sh'` on UNIX, `process.env.ComSpec` on Windows. * `timeout` {number} **Default:** `0` * `maxBuffer` {number} Largest amount of data in bytes allowed on stdout or - stderr. **Default:** `200*1024`. If exceeded, the child process is terminated. - See caveat at [`maxBuffer` and Unicode][]. + stderr. If exceeded, the child process is terminated. See caveat at + [`maxBuffer` and Unicode][]. **Default:** `200*1024`. * `killSignal` {string|integer} **Default:** `'SIGTERM'` * `uid` {number} Sets the user identity of the process (see setuid(2)). * `gid` {number} Sets the group identity of the process (see setgid(2)). @@ -202,20 +203,6 @@ can be used to specify the character encoding used to decode the stdout and stderr output. If `encoding` is `'buffer'`, or an unrecognized character encoding, `Buffer` objects will be passed to the callback instead. -The `options` argument may be passed as the second argument to customize how -the process is spawned. The default options are: - -```js -const defaults = { - encoding: 'utf8', - timeout: 0, - maxBuffer: 200 * 1024, - killSignal: 'SIGTERM', - cwd: null, - env: null -}; -``` - If `timeout` is greater than `0`, the parent will send the signal identified by the `killSignal` property (the default is `'SIGTERM'`) if the child runs longer than `timeout` milliseconds. @@ -258,8 +245,8 @@ changes: * `encoding` {string} **Default:** `'utf8'` * `timeout` {number} **Default:** `0` * `maxBuffer` {number} Largest amount of data in bytes allowed on stdout or - stderr. **Default:** `200*1024` If exceeded, the child process is terminated. - See caveat at [`maxBuffer` and Unicode][]. + stderr. If exceeded, the child process is terminated. See caveat at + [`maxBuffer` and Unicode][]. **Default:** `200*1024`. * `killSignal` {string|integer} **Default:** `'SIGTERM'` * `uid` {number} Sets the user identity of the process (see setuid(2)). * `gid` {number} Sets the group identity of the process (see setgid(2)). @@ -341,11 +328,11 @@ changes: * `env` {Object} Environment key-value pairs. * `execPath` {string} Executable used to create the child process. * `execArgv` {Array} List of string arguments passed to the executable. - **Default:** `process.execArgv` + **Default:** `process.execArgv`. * `silent` {boolean} If `true`, stdin, stdout, and stderr of the child will be piped to the parent, otherwise they will be inherited from the parent, see the `'pipe'` and `'inherit'` options for [`child_process.spawn()`][]'s - [`stdio`][] for more details. **Default:** `false` + [`stdio`][] for more details. **Default:** `false`. * `stdio` {Array|string} See [`child_process.spawn()`][]'s [`stdio`][]. When this option is provided, it overrides `silent`. If the array variant is used, it must contain exactly one item with value `'ipc'` or an error @@ -701,22 +688,22 @@ changes: * `options` {Object} * `cwd` {string} Current working directory of the child process. * `input` {string|Buffer|Uint8Array} The value which will be passed as stdin - to the spawned process. - - supplying this value will override `stdio[0]` - * `stdio` {string|Array} Child's stdio configuration. **Default:** `'pipe'` - - `stderr` by default will be output to the parent process' stderr unless - `stdio` is specified + to the spawned process. Supplying this value will override `stdio[0]`. + * `stdio` {string|Array} Child's stdio configuration. `stderr` by default will + be output to the parent process' stderr unless `stdio` is specified. + **Default:** `'pipe'`. * `env` {Object} Environment key-value pairs. * `uid` {number} Sets the user identity of the process (see setuid(2)). * `gid` {number} Sets the group identity of the process (see setgid(2)). * `timeout` {number} In milliseconds the maximum amount of time the process - is allowed to run. **Default:** `undefined` + is allowed to run. **Default:** `undefined`. * `killSignal` {string|integer} The signal value to be used when the spawned - process will be killed. **Default:** `'SIGTERM'` + process will be killed. **Default:** `'SIGTERM'`. * `maxBuffer` {number} Largest amount of data in bytes allowed on stdout or - stderr. **Default:** `200*1024` If exceeded, the child process is terminated. - See caveat at [`maxBuffer` and Unicode][]. - * `encoding` {string} The encoding used for all stdio inputs and outputs. **Default:** `'buffer'` + stderr. If exceeded, the child process is terminated. See caveat at + [`maxBuffer` and Unicode][]. **Default:** `200*1024`. + * `encoding` {string} The encoding used for all stdio inputs and outputs. + **Default:** `'buffer'`. * `windowsHide` {boolean} Hide the subprocess console window that would normally be created on Windows systems. **Default:** `false`. * `shell` {boolean|string} If `true`, runs `command` inside of a shell. Uses @@ -759,26 +746,25 @@ changes: * `options` {Object} * `cwd` {string} Current working directory of the child process. * `input` {string|Buffer|Uint8Array} The value which will be passed as stdin - to the spawned process. - - supplying this value will override `stdio[0]`. - * `stdio` {string|Array} Child's stdio configuration. **Default:** `'pipe'` - - `stderr` by default will be output to the parent process' stderr unless - `stdio` is specified + to the spawned process. Supplying this value will override `stdio[0]`. + * `stdio` {string|Array} Child's stdio configuration. `stderr` by default will + be output to the parent process' stderr unless `stdio` is specified. + **Default:** `'pipe'`. * `env` {Object} Environment key-value pairs. - * `shell` {string} Shell to execute the command with. - **Default:** `'/bin/sh'` on UNIX, `process.env.ComSpec` on Windows. See - [Shell Requirements][] and [Default Windows Shell][]. + * `shell` {string} Shell to execute the command with. See + [Shell Requirements][] and [Default Windows Shell][]. **Default:** + `'/bin/sh'` on UNIX, `process.env.ComSpec` on Windows. * `uid` {number} Sets the user identity of the process. (See setuid(2)). * `gid` {number} Sets the group identity of the process. (See setgid(2)). * `timeout` {number} In milliseconds the maximum amount of time the process - is allowed to run. **Default:** `undefined` + is allowed to run. **Default:** `undefined`. * `killSignal` {string|integer} The signal value to be used when the spawned - process will be killed. **Default:** `'SIGTERM'` + process will be killed. **Default:** `'SIGTERM'`. * `maxBuffer` {number} Largest amount of data in bytes allowed on stdout or - stderr. **Default:** `200*1024` If exceeded, the child process is terminated. - See caveat at [`maxBuffer` and Unicode][]. + stderr. If exceeded, the child process is terminated. See caveat at + [`maxBuffer` and Unicode][]. **Default:** `200*1024`. * `encoding` {string} The encoding used for all stdio inputs and outputs. - **Default:** `'buffer'` + **Default:** `'buffer'`. * `windowsHide` {boolean} Hide the subprocess console window that would normally be created on Windows systems. **Default:** `false`. * Returns: {Buffer|string} The stdout from the command. @@ -821,21 +807,20 @@ changes: * `options` {Object} * `cwd` {string} Current working directory of the child process. * `input` {string|Buffer|Uint8Array} The value which will be passed as stdin - to the spawned process. - - supplying this value will override `stdio[0]`. + to the spawned process. Supplying this value will override `stdio[0]`. * `stdio` {string|Array} Child's stdio configuration. * `env` {Object} Environment key-value pairs. * `uid` {number} Sets the user identity of the process (see setuid(2)). * `gid` {number} Sets the group identity of the process (see setgid(2)). * `timeout` {number} In milliseconds the maximum amount of time the process - is allowed to run. **Default:** `undefined` + is allowed to run. **Default:** `undefined`. * `killSignal` {string|integer} The signal value to be used when the spawned - process will be killed. **Default:** `'SIGTERM'` + process will be killed. **Default:** `'SIGTERM'`. * `maxBuffer` {number} Largest amount of data in bytes allowed on stdout or - stderr. **Default:** `200*1024` If exceeded, the child process is terminated. - See caveat at [`maxBuffer` and Unicode][]. + stderr. If exceeded, the child process is terminated. See caveat at + [`maxBuffer` and Unicode][]. **Default:** `200*1024`. * `encoding` {string} The encoding used for all stdio inputs and outputs. - **Default:** `'buffer'` + **Default:** `'buffer'`. * `shell` {boolean|string} If `true`, runs `command` inside of a shell. Uses `'/bin/sh'` on UNIX, and `process.env.ComSpec` on Windows. A different shell can be specified as a string. See [Shell Requirements][] and @@ -1106,7 +1091,12 @@ changes: * `message` {Object} * `sendHandle` {Handle} -* `options` {Object} +* `options` {Object} The `options` argument, if present, is an object used to + parameterize the sending of certain types of handles. `options` supports + the following properties: + * `keepOpen` - A Boolean value that can be used when passing instances of + `net.Socket`. When `true`, the socket is kept open in the sending process. + **Default:** `false`. * `callback` {Function} * Returns: {boolean} @@ -1161,14 +1151,6 @@ receive the object as the second argument passed to the callback function registered on the [`process.on('message')`][] event. Any data that is received and buffered in the socket will not be sent to the child. -The `options` argument, if present, is an object used to parameterize the -sending of certain types of handles. `options` supports the following -properties: - - * `keepOpen` - A Boolean value that can be used when passing instances of - `net.Socket`. When `true`, the socket is kept open in the sending process. - Defaults to `false`. - The optional `callback` is a function that is invoked after the message is sent but before the child may have received it. The function is called with a single argument: `null` on success, or an [`Error`][] object on failure. |