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The output of your command "$ cat -n /etc/os-release" is:

     1	PRETTY_NAME="Ubuntu 26.04 LTS"
     2	NAME="Ubuntu"
     3	VERSION_ID="26.04"
     4	VERSION="26.04 LTS (Resolute Raccoon)"
     5	VERSION_CODENAME=resolute
     6	ID=ubuntu
     7	ID_LIKE=debian
     8	HOME_URL="https://www.ubuntu.com/"
     9	SUPPORT_URL="https://help.ubuntu.com/"
    10	BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
    11	PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
    12	UBUNTU_CODENAME=resolute
    13	LOGO=ubuntu-logo