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Shell Configuration

Login/non-login shells

QuestionAnswer
Scripts that execute when a shell starts Shell Configuration Files
Run when the system starts and is only using the Text User Interface (TUI) as the user interface Login shells
run when the system boots into a Graphical User Interface (GUI) and is used to start a terminal session Non-Login shell
Used by Non-Login shell -t stores shell preferences for individual users ~/.bashrc
Used by Login shell - stores system-wide configuration commands for ALL USERS and is user primarily to set environment variables /etc/profile
Used by Login shell - stores shell preferences for individual users ~/.bash_profile
Used by Login shell - stores commands that execute when a user logs in ~/.bash_login
Used by Login shell - stores configuration preferences similar to /etc/profile, but for INDIVIDUAL users ~/.profile
Used by Login shell - stores commands that execute when a user logs out ~/.bash_logout
Login shells execute the configuration scripts they use in the following order 1. /etc/profile 2. ~/.bash_profile 3. ~/.bash-login 4. ~/.profile
Print system information uname
uname Options: Print all system info uname -a
uname Options: Print the operating system uname -o
uname Options: print the processor's architecture uname -p
Switches to the specified user into a login shell su -l {userName}
Switches user Bob into a Non-Login shell su Bob
ls -l color scheme for DIRECTORIES Blue
ls -l color scheme for TEXT FILES White
ls -l color scheme for LINKS cyan
ls -l color scheme for IMAGE FILES Magenta
ls -l color scheme for COMPRESSED FILES Red
ls -l color scheme for EXECUTABLE FILES Green
Clear the history list history -c
Created by: johnadream