HOSTNAME(5) - Linux man page online | File formats

Local hostname configuration file.

HOSTNAME(5) hostname HOSTNAME(5)


hostname - Local hostname configuration file




The /etc/hostname file configures the name of the local system that is set during boot using the sethostname(2) system call. It should contain a single newline-terminated hostname string. Comments (lines starting with a `#') are ignored. The hostname may be a free-form string up to 64 characters in length; however, it is recommended that it consists only of 7-bit ASCII lower-case characters and no spaces or dots, and limits itself to the format allowed for DNS domain name labels, even though this is not a strict requirement. You may use hostnamectl(1) to change the value of this file during runtime from the command line. Use systemd-firstboot(1) to initialize it on mounted (but not booted) system images.


The simple configuration file format of /etc/hostname originates from Debian GNU/Linux.


systemd(1), sethostname(2), hostname(1), hostname(7), machine-id(5), machine-info(5), hostnamectl(1), systemd-hostnamed.service(8), systemd-firstboot(1)
systemd 237 HOSTNAME(5)
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hostname(5) referred by hostnamectl(1) | machine-id(5) | machine-info(5) | os-release(5) | sssd-ad(5) | sssd-ipa(5) | systemd-hostnamed.service(8) | systemd.directives(7) | systemd.index(7)
refer to gethostname(2) | hostname(1) | hostname(7) | hostnamectl(1) | machine-id(5) | machine-info(5) | systemd(1) | systemd-hostnamed.service(8)
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