lsb_release:显示发行版本信息
# 显示发行版的 Linux 版本、ID、描述、具体版本号等$ lsb_release -a
/etc/issue:欢迎信息
# 显示 login 提示符出现之前的欢迎信息$ cat /etc/issueDebian GNU/Linux 11 \n \l
/etc/os-release:操作系统标识数据
$ cat /etc/os-releasePRETTY_NAME="Debian GNU/Linux 11 (bullseye)"NAME="Debian GNU/Linux"VERSION_ID="11"VERSION="11 (bullseye)"VERSION_CODENAME=bullseyeID=debianHOME_URL="https://www.debian.org/"SUPPORT_URL="https://www.debian.org/support"BUG_REPORT_URL="https://bugs.debian.org/"
