Linux command
pwconv 命令
文本
复制后可按需替换文件名、目录或参数。
常用示例
Convert to shadow passwords
pwconv
Verbose conversion
pwconv -R [/]
说明
pwconv creates or updates the /etc/shadow file from /etc/passwd, migrating password hashes from the world-readable passwd file to the root-only-readable shadow file. This is a fundamental security measure that prevents unprivileged users from accessing password hashes for offline cracking. The command is part of shadow-utils and is typically run once during initial system setup or when converting a legacy system to shadow passwords. It preserves existing shadow entries and only adds or updates entries as needed.
参数
- -R _ROOT_
- Chroot directory.
FAQ
What is the pwconv command used for?
pwconv creates or updates the /etc/shadow file from /etc/passwd, migrating password hashes from the world-readable passwd file to the root-only-readable shadow file. This is a fundamental security measure that prevents unprivileged users from accessing password hashes for offline cracking. The command is part of shadow-utils and is typically run once during initial system setup or when converting a legacy system to shadow passwords. It preserves existing shadow entries and only adds or updates entries as needed.
How do I run a basic pwconv example?
Run `pwconv` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does -R _ROOT_ do in pwconv?
Chroot directory.