What is hostname Linux command?
The Linux hostname command is used to view or set the system’s hostname. It can be helpful for identifying the system within a network or modifying the hostname temporarily or permanently.
hostname Syntax:
Section titled “hostname Syntax:”hostname [option]hostname Options:
Section titled “hostname Options:”| Option | Description |
|---|---|
| -a | Display the alias name |
| -d | Display the DNS domain name |
| -f | Display the FQDN (fully qualified domain name) |
| -i | Display the network address (IP address) |
| -s | Display the short hostname |
Parameters:
Section titled “Parameters:”There are no specific parameters for the hostname command.
hostname Command Usage Examples:
Section titled “hostname Command Usage Examples:”Display the current hostname
Section titled “Display the current hostname”hostnameThis command will display the current hostname of the system.
Display the FQDN (Fully Qualified Domain Name)
Section titled “Display the FQDN (Fully Qualified Domain Name)”hostname -fUse this command to display the fully qualified domain name (FQDN) of the system.
Set a new hostname
Section titled “Set a new hostname”sudo hostnamectl set-hostname newhostnameThis command allows changing the hostname to a new one, in this case, “newhostname”.
Display the local hostname
Section titled “Display the local hostname”hostname -sThe -s flag is used to display the local hostname of the system.
Display all information about the hostname
Section titled “Display all information about the hostname”hostname -aBy using the -a flag, you can display all information associated with the hostname of the system.
How do I use hostname in Linux?
Section titled “How do I use hostname in Linux?”To use the hostname command in bash, execute the following command:
hostnameHow to set a new hostname in Linux?
Section titled “How to set a new hostname in Linux?”To set a new hostname in Linux using the hostname command, follow this example:
hostname newhostnameHow to display the FQDN using hostname in Linux?
Section titled “How to display the FQDN using hostname in Linux?”To display the Fully Qualified Domain Name (FQDN) using the hostname command in Linux, use the following command:
hostname --fqdnHow to display the domain name using hostname in Linux?
Section titled “How to display the domain name using hostname in Linux?”To display the domain name using the hostname command in Linux, you can run:
hostname --domainHow to display the short hostname using hostname in Linux?
Section titled “How to display the short hostname using hostname in Linux?”To display the short hostname using the hostname command in Linux, you can use:
hostname --shortHow to display the IP address associated with the hostname using hostname in Linux?
Section titled “How to display the IP address associated with the hostname using hostname in Linux?”To display the IP address associated with the hostname using the hostname command in Linux, execute the following:
hostname -IHow to display all the information available with hostname in Linux?
Section titled “How to display all the information available with hostname in Linux?”To display all the information available with the hostname command in Linux, you can run:
hostname --all-fqdnHow to display the version information for hostname in Linux?
Section titled “How to display the version information for hostname in Linux?”To display the version information for the hostname command in Linux, use the following command:
hostname --versionApplications of the hostname command
Section titled “Applications of the hostname command”- Display or set the system’s hostname
- Show the DNS domain name of the system
- Print the FQDN (Fully Qualified Domain Name) of the system
- Retrieve or change the NIS (Network Information Service) domain name
- Return the local host name
- Specify the version and release information of the operating system