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36 lines
1.3 KiB
Plaintext
36 lines
1.3 KiB
Plaintext
---
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syntax: markdown
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tags: [tldr, linux]
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source: https://github.com/tldr-pages/tldr.git
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---
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# agetty
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> Alternative `getty`: Open a `tty` port, prompt for a login name, and invoke the `/bin/login` command.
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> It is normally invoked by `init`.
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> Note: the baud rate is the speed of data transfer between a terminal and a device over a serial connection.
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> More information: <https://manned.org/agetty>.
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- Connect `stdin` to a port (relative to `/dev`) and optionally specify a baud rate (defaults to 9600):
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`agetty {{tty}} {{115200}}`
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- Assume `stdin` is already connected to a `tty` and set a timeout for the login:
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`agetty {{[-t|--timeout]}} {{timeout_in_seconds}} -`
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- Assume the `tty` is 8-bit, overriding the `TERM` environment variable set by `init`:
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`agetty {{[-8|--8bits]}} - {{term_var}}`
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- Skip the login (no login) and invoke, as root, another login program instead of `/bin/login`:
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`agetty {{[-n|--skip-login]}} {{[-l|--login-program]}} {{login_program}} {{tty}}`
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- Do not display the pre-login (issue) file (`/etc/issue` by default) before writing the login prompt:
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`agetty {{[-i|--noissue]}} -`
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- Change the root directory and write a specific fake host into the `utmp` file:
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`agetty {{[-r|--chroot]}} {{/path/to/root_directory}} {{[-H|--host]}} {{fake_host}} -`
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