Given a minimum version of Linux, how do you know which distribution and distro are being used? This is a crucial issue. First, you might consider typing uname -a, but that doesn’t provide all the information you might need. Fortunately, almost all distributions have a file that holds this valuable data.
This is the / etc / os-release file. You might guess how to check it, because we have already introduced the use of the cat command before. So all you need to do is happily have what you need.
$ cat /etc/os-release NAME="Ubuntu" VERSION="18.04.2 LTS (Bionic Beaver)" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 18.04.2 LTS" VERSION_ID="18.04" HOME_URL="https://www.ubuntu.com/" SUPPORT_URL="https://help.ubuntu.com/" BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/" PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy" VERSION_CODENAME=bionic UBUNTU_CODENAME=bionic
On the other hand, uname provides the following system information:
- -a, -all All information is printed in the following order, except -p and -i are omitted (if unknown):
- -s,-kernel name Print kernel name
- -n, –nodename Print network node hostname
- -r, – kernel release Print kernel version
- -v,-kernel version Print kernel version
- -m, -machine Printer hardware name
- -p, -processor Print processor type (non-portable)
- -i, – hardware platform Printing hardware platform (non-portable)
- -Version Output uname version information and exit
- -o,-operating system (Mainly output GNU / Linux)
Examples of consistent usage
$ uname -o GNU/Linux $ uname -m x86_64 $ uname -r 4.15.0-54-generic $ uname -s Linux $ uname -a Linux cloudstack 4.15.0-54-generic #58-Ubuntu SMP Mon Jun 24 10:55:24 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
As you can see above, the uname command cannot be used to find the release and release.
Use lsb_release command
On Debian-based Linux distributions, you can use the lsb_release command to print release-specific information.
-v, --version: Show the version of the LSB against which your current installation is compliant. -i, --id: Display the distributor's ID. -d, --description: Display a description of the currently installed distribution. -r, --release: Display the release number of the currently installed distribution. -c, --codename: Display the code name of the currently installed distribution. -a, --all: Display all of the above information. -s, --short: Use the short output format for any information displayed. This format omits the leading header(s). -h, --help: Show summary of options.
See usage examples below.
$ lsb_release -a No LSB modules are available. Distributor ID: Debian Description: Debian GNU/Linux 10 (buster) Release: 10 Codename: buster $ lsb_release -c Codename: buster $ lsb_release -d Description: Debian GNU/Linux 10 (buster) $ lsb_release -i Distributor ID: Debian
Use hostnamectl command
For Linux systems with Systemd init, you can get some system information from the hostnamectl command output, such as the operating system, kernel version, and CPU architecture.
[email protected]:~# hostnamectl Static hostname: debian10 Icon name: computer-vm Chassis: vm Machine ID: 2e5ced54e5274424b2165b459a18372a Boot ID: e21975d65c53409497466bfbce9cc193 Virtualization: kvm Operating System: Debian GNU/Linux 10 (buster) Kernel: Linux 4.19.0-5-amd64 Architecture: x86-64
See the full list of available options below:
$ hostnamectl --help hostnamectl [OPTIONS...] COMMAND ... Query or change system hostname. -h --help Show this help --version Show package version --no-ask-password Do not prompt for password -H --host=[[email protected]]HOST Operate on remote host -M --machine=CONTAINER Operate on local container --transient Only set transient hostname --static Only set static hostname --pretty Only set pretty hostname Commands: status Show current hostname settings set-hostname NAME Set system hostname set-icon-name NAME Set icon name for host set-chassis NAME Set chassis type for host set-deployment NAME Set deployment environment for host set-location NAME Set location for host See the hostnamectl(1) man page for details.
Check / etc / issue
Look at the content on / etc / issue.
$ cat /etc/issue Debian GNU/Linux 10 n l
Finding releases and releases is easy. We hope it is useful and useful.
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