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参考文献 你可能不知道的SHELL 系统信息 12345678910111213141516# cat /etc/issueUbuntu 20.04.6 LTS \n \l# cat /etc/os-releaseNAME="Ubuntu"VERSION="20.04.6 LTS (Focal Fossa)"ID=ubuntuID_LIKE=debianPRETTY_NAME="Ubuntu 20.04.6 LTS"VERSION_ID="20.04"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/priv ...