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Linux Boot Process
init starts the user login system
After login, user startup scripts are executed
- looks in home directory for .filename scripts, which are user configurable managed scripts for user settings and preferences
The shell from /etc/passwd is then spawned with associated user-specific scripts and settings.
- .bash_profile and other similar or shell related scripts are executed prior to the shell prompt being displayed
Others .filename scripts, such as .Xdefaults, are run by specific processes when they are started up to determine the user’s preferences