共计 1134 个字符，预计需要花费 3 分钟才能阅读完成。
pwck 命令 用来验证系统认证文件 /etc/passwd 和/etc/shadow的内容和格式的完整性。
语法
pwck(选项)(参数)选项
-q：仅报告错误信息；-s：以用户 id 排序文件“/etc/passwd”和“/etc/shadow”;
-r：只读方式运行指令。参数
- 密码文件：指定密码文件的路径；
- 影子文件：指定影子文件的路径。
实例
pwck /etc/passwd
user 'lp': directory '/var/spool/lpd' does not exist
user 'news': directory '/var/spool/news' does not exist
user 'uucp': directory '/var/spool/uucp' does not exist
user 'www-data': directory '/var/www' does not exist
user 'list': directory '/var/list' does not exist
user 'irc': directory '/var/run/ircd' does not exist
user 'gnats': directory '/var/lib/gnats' does not exist
user 'nobody': directory '/nonexistent' does not exist
user 'syslog': directory '/home/syslog' does not exist
user 'couchdb': directory '/var/lib/couchdb' does not exist
user 'speech-dispatcher': directory '/var/run/speech-dispatcher' does not exist
user 'usbmux': directory '/home/usbmux' does not exist
user 'haldaemon': directory '/var/run/hald' does not exist
user 'pulse': directory '/var/run/pulse' does not exist
user 'saned': directory '/home/saned' does not exist
user 'hplip': directory '/var/run/hplip' does not exist
pwck：无改变《Linux 学习每日一个知识点》栏目是马哥教育 Linux 云计算年薪 20 万 + 的学员社群特别发起，分享 Linux 工具、Linux 语法、Linux 项目等知识点，帮助大家快速的了解 Linux 学习，快速步入 Linux 高薪的快车道。
http://www.magedu.com/74163.html
正文完
星哥玩云-微信公众号
