64 lines
2.1 KiB
Markdown
64 lines
2.1 KiB
Markdown
## Class: CommandLine
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> Manipulate the command line arguments for your app that Chromium reads
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Process: [Main](../glossary.md#main-process)<br />
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_This class is not exported from the `'electron'` module. It is only available as a return value of other methods in the Electron API._
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The following example shows how to check if the `--disable-gpu` flag is set.
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```javascript
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const { app } = require('electron')
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app.commandLine.hasSwitch('disable-gpu')
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```
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For more information on what kinds of flags and switches you can use, check
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out the [Command Line Switches](./command-line-switches.md)
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document.
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### Instance Methods
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#### `commandLine.appendSwitch(switch[, value])`
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* `switch` string - A command-line switch, without the leading `--`
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* `value` string (optional) - A value for the given switch
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Append a switch (with optional `value`) to Chromium's command line.
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**Note:** This will not affect `process.argv`. The intended usage of this function is to
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control Chromium's behavior.
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#### `commandLine.appendArgument(value)`
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* `value` string - The argument to append to the command line
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Append an argument to Chromium's command line. The argument will be quoted
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correctly. Switches will precede arguments regardless of appending order.
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If you're appending an argument like `--switch=value`, consider using `appendSwitch('switch', 'value')` instead.
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**Note:** This will not affect `process.argv`. The intended usage of this function is to
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control Chromium's behavior.
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#### `commandLine.hasSwitch(switch)`
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* `switch` string - A command-line switch
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Returns `boolean` - Whether the command-line switch is present.
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#### `commandLine.getSwitchValue(switch)`
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* `switch` string - A command-line switch
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Returns `string` - The command-line switch value.
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**Note:** When the switch is not present or has no value, it returns empty string.
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#### `commandLine.removeSwitch(switch)`
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* `switch` string - A command-line switch
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Removes the specified switch from Chromium's command line.
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**Note:** This will not affect `process.argv`. The intended usage of this function is to
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control Chromium's behavior.
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