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The environment of the command line refers to the
settings and preferences of the current user. It enables
users to set greetings, alias commands, variables,
and much more.
For Unix-based systems like Mac OS and Linux (not
Windows), the shell command env returns a list of
environment variables for the current user.
The shell command alias is used to assign
commonly used commands to shortcuts (or aliases).
The assigned commonly used command should be
wrapped in double quotes.
Variables that can be used across terminal commands
are called environment variables. They also hold
information about the shell’s environment.
All the commands in ~/.bash_prole are executed with
the shell command source ~/.bash_profile .
So when changes are made to ~/.bash_prole, run this
command to activate the changes in the current
session.
The history shell command is used to get a history
of commands (also known as “events”) that were
executed in the current session. The command also
allows us to perform operations on this list of
commands that have been executed, such as selecting
or manipulating a command in the history.
Cheatsheets / Learn the Command Line
Configuring the Environment
Command line environment
Shell Command env
Alias
Environment Variables
Source Bash Prole
history command in Unix Systems
# The following command creates an alias
`pd` for the command `pwd`
alias pd="pwd"
