Linux su - root无法登陆 :No such file or directory

Question:

  1. 在Linux图形界面使用root登陆提示如下:

View Details:

/etc/gdm/PreSession/Default: Registering your session with utmp.

/etc/gdm/PreSession/Default: running:/usr/bin/sessreg -a -u /var/run/utmp -x "/var/gdm/:0.Xservers"  -h "" -l ":0" "root"

Localuser:root being added to access control list

No Profile for user 'root' found

/bin/sh:/bin/bash

:No such file or directory

/bin/sh"line 0: exec:/bin/bash

:cannot execute : No such file or directory

2.重启进入单用户模式新建普通用户,可正常登陆,通过该用户"su - root"提示:":No such file or directory"。


Resolution:

查看/etc/shadow和/etc/passwd两个文件,发现/etc/passwd文件每行末尾显示"^M",该文件为DOS的编码格式。

我们需要将该文件变为Linux编码格式,在单用户模式下:# dos2unix /etc/passwd /etc/passwd。

重启主机,登陆正常。


Redhat Case:

https://access.redhat.com/site/solutions/258803

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