Shulou(Shulou.com)06/02 Report--

1. Omit password verification

Change the root:x:0:0:root:/root:/bin/bash in/etc/passwd to root::0:0:root:/root:/bin/bash, and you can remove the x in it, so that the root user does not need a password. The same goes for other users.

2. Omit entering user name

Modify/etc/inittab

In inittab, there are the following configurations:

O0:12345:respawn:/sbin/getty -L 115200ttyO0

We can skip the user name and password entry by simply modifying it to execute a script we wrote instead of getty. Put a script file log in the root directory (note the permission of the script file, I set it to 777 here), modify it as follows:

O0:12345:respawn:/log -L 115200 ttyO0

The log script file is as follows:

#!/ bin/sh

/bin/login -f root

These two methods are not very simple, I believe everyone must have mastered, what tips you can share with me in time oh ~ look forward to everyone's views.

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