Shell Login | Shell Login Steps | System Login Steps by linuxtopic

Shell Login | Shell Login Steps | System Login Steps by linuxtopic


After the Successfully booting the system we got a login prompt and entered username and password.


To know about boot process, click here



1 - Enter Username and Password, System Execute profile file, its location in /etc directory.


2 - Profile file search and execute all scripts (*.sh ) file from the /etc/profile.d/ directory.

ls -l /etc/profile.d/
3 - profile and profile.d/*.sh keeps all the systemwide environment and shell variables

4 - successful execution of profile, system find and execute bash_profile file, this file store in home directory of the user.
cat ~/.bash_profile
5 - bash_profile stores all user specific environment and shell variables and execute it.

6 - in the next steps of shell login execute ~/.bashrc file, this file execute /etc/bashrc file with their system wide aliases and local functions, User command aliases and shell functions.

cat  ~/.bashrc
7 - After all successfully executed,we got a login on the system and ready to enter any command.

To know about Command execution process, click here


Shell Login | Shell Login Steps | System Login Steps  by linuxtopic
Shell Login | Shell Login Steps | System Login Steps  by linuxtopic

Thanks

End of this Shell Login Process
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