Your home directory is named: /home/YourLoginName
By default, you have a bourne shell (bash), meaning you can also type: cd ~SomeLoginName (eg: ~deatrich ) to reach your homedir.
The bash shell has many features, read the man page for more help.
If you want to modify your environment, then you typically need to edit your .bash_profile and/or your .bashrc file. For instance, suppose you want to add an alias to …:
$ alias 'lstime=ls -latr'
This line means that every time you insert in the command line the command lstime, the bash will execute the more complex command ls -lart
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