passwd

Example of the problem: docker run -ti -v my_passwd:/etc/passwd -v my_shadow:/etc/shadow --rm centos [root@681a5489f3b0 /]# useradd test # does not work !? useradd: failure while writing changes to /etc/passwd [root@681a5489f3b0 /]# ll /etc/passwd /etc/shadow # permission check -rw-r--r-- 1 root root 157 Oct 8 10:17 /etc/passwd -rw-r----- 1 root root 100 Oct 7 18:02 /etc/shadow The similar problem arises when using passwd: [root@681a5489f3b0 /]# passwd test Changing password for user test. New password: BAD PASSWORD: The password is shorter than 8 characters Retype new password: passwd:

I need to be able to change the users' password through a web page (in a controlled environment). So, for that, I'm using this code: <?php $output = shell_exec("sudo -u dummy passwd testUser testUserPassword"); $output2 = shell_exec("dummyPassword"); echo $output; echo $output2; echo "done"; ?> My problem is that this script is not changing the password for the user "testUser". What am I doing wrong? Thanks Another option is to have a shell script, say called passwd_change.sh somewhere that looks like this: #!/usr/bin/expect -f set username [lindex $argv 0] set password [lindex $argv 1] spawn

源地址 http://zengxx1989.iteye.com/blog/477619 Ubuntu Linux有一个与众不同的特点，那就是初次使用时，你无法作为root来登录系统，为什么会这样？这就要从系统的安装说起。对于其他Linux系统来 说，一般在安装过程就设定root密码，这样用户就能用它登录root帐户或使用su命令转换到超级用户身份。与之相反，Ubuntu默认安装时，并没有 给root用户设置口令，也没有启用root帐户。问题是要想作为root用户来运行命令该怎么办呢？没关系，我们可以使用sudo命令达此目的。 sudo 是linux下常用的允许普通用户使用超级用户权限的工具，该命令为管理员提供了一种细颗粒度的访问控制方法，通过它人们既可以作为超级用户又可以作为其 它类型的用户来访问系统。这样做的好处是，管理员能够在不告诉用户root密码的前提下，授予他们某些特定类型的超级用户权限，这正是许多系统管理员所梦 寐以求的。 　　设置分配很简单，只要为root设置一个root密码就行了： $ sudo passwd root 　　之后会提示要输入root用户的密码，连续输入root密码，再使用：$ su 　　就可以切换成超级管理员用户登陆了！ 1. 在终端执行 sudo passwd root 指令后，系统将会提示你设置一个新的 root 帐号密码。 　　2. 点击

I need to have the ability to create user accounts on my Linux (Fedora 10) and automatically assign a password via a bash script(or otherwise, if need be). It's easy to create the user via Bash e.g.: [whoever@server ]# /usr/sbin/useradd newuser Is it possible to assign a password in Bash, something functionally similar to this, but automatically: [whoever@server ]# passwd newuser Changing password for user testpass. New UNIX password: Retype new UNIX password: passwd: all authentication tokens updated successfully. [whoever@server ]# You can run the passwd command and send it piped input. So,

I am working on what I thought was a very simple script to dynamically create an FTP user using 'useradd' There are several parts of this process I am unfamiliar with, and an entire day's research has not gotten me too far. Here is what I have: password="pass" pass=$(perl -e 'print crypt($ARGV[0], "wtf")' $password) useradd -d HOME_DIR -s /bin/bash -g GROUP -p $pass -f -1 testing Notes HOME_DIR and GROUP are placeholders I am not having issues with the home/base_dir (-d, -b) or group (-g) functionality of 'useradd' Topics: Why are my password generation efforts not working? is /bin/bash the