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pwck
===
用来验证系统认证文件内容和格式的完整性
## 说明
**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
```
```
```
： ；
-s：
-r：
```
### 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
```
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：
```
