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packer-cn/website/source/partials/builders/_boot-command.html.md

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There are a set of special keys available. If these are in your boot command, they will be replaced by the proper key:

  • <bs> - Backspace

  • <del> - Delete

  • <enter> and <return> - Simulates an actual "enter" or "return" keypress.

  • <esc> - Simulates pressing the escape key.

  • <tab> - Simulates pressing the tab key.

  • <f1> - <f12> - Simulates pressing a function key.

  • <up> <down> <left> <right> - Simulates pressing an arrow key.

  • <spacebar> - Simulates pressing the spacebar.

  • <insert> - Simulates pressing the insert key.

  • <home> <end> - Simulates pressing the home and end keys.

  • <pageUp> <pageDown> - Simulates pressing the page up and page down keys.

  • <leftAlt> <rightAlt> - Simulates pressing the alt key.

  • <leftCtrl> <rightCtrl> - Simulates pressing the ctrl key.

  • <leftShift> <rightShift> - Simulates pressing the shift key.

  • <leftAltOn> <rightAltOn> - Simulates pressing and holding the alt key.

  • <leftCtrlOn> <rightCtrlOn> - Simulates pressing and holding the ctrl key.

  • <leftShiftOn> <rightShiftOn> - Simulates pressing and holding the shift key.

  • <leftAltOff> <rightAltOff> - Simulates releasing a held alt key.

  • <leftCtrlOff> <rightCtrlOff> - Simulates releasing a held ctrl key.

  • <leftShiftOff> <rightShiftOff> - Simulates releasing a held shift key.

  • <wait> <wait5> <wait10> - Adds a 1, 5 or 10 second pause before sending any additional keys. This is useful if you have to generally wait for the UI to update before typing more.

  • <waitXX> - Add user defined time.Duration pause before sending any additional keys. For example <wait10m> or <wait1m20s>

When using modifier keys ctrl, alt, shift ensure that you release them, otherwise they will be held down until the machine reboots. Use lowercase characters as well inside modifiers.

For example: to simulate ctrl+c use <leftCtrlOn>c<leftCtrlOff>.

In addition to the special keys, each command to type is treated as a template engine. The available variables are:

  • HTTPIP and HTTPPort - The IP and port, respectively of an HTTP server that is started serving the directory specified by the http_directory configuration parameter. If http_directory isn't specified, these will be blank!

For more examples of various boot commands, see the sample projects from our community templates page.