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The requirement is &nbsp;if user enters password,<br />
password needs to be validated against system encrypted password.<br />
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for example : login nameis guest and password is guest123.<br />
<br />
the process is already running in guest login, if user enters password , the password should be validated aganist system password , which is similiar to screen saver/xlock passwd <br />

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The requirement is  if user enters password,
password needs to be validated against system encrypted password.

for example : login nameis guest and password is guest123.

the process is already running in guest login, if user enters password , the password should be validated aganist system password , which is similiar to screen saver/xlock passwd 


validate with system password

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.

Linux

Kernel programming for Linux operating systems can be done with many different languages; C, C++, Python, Perl and Java, which are some of the most common languages used.There are also many different varieties of Linux, such as Ubuntu, Fedora and OpenSUSE.