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| Pregunta | Respuesta |
| One key component of the bash shell is: | shell variables |
| What is a variables name? | name that can be assigned a value |
| Who reads the value of the variables? | The shell (and other commands) |
| Are the variables case sensitive? | Yes they are case sensitive |
| When is a local variable available? | In the shell in which it was created |
| By convention, lowercase characters are for which variable? | Local variable |
| Uppercase characters are used for what variable? | environment variable |
| What does the set command do? | display all variables |
| What is the purpose of the unset command? | To delete variables |
| What does the PATH variable contain? | list of directories |
| When the user types a command and then presses the Enter key, the PATH variable does what? | Searches for an executable file with the same name |
| Where does the absolute path specifies a file? | Top level directory through all of the sub directories |
| Where does the relative path specifies a file? | In the current directory |
| If the $PATH variable were to be modify, how would an admin see this? | as suspicious activity |
| Which file customizes the shell when this starts? | initialization (or configuration) files |
| There are two types of initialization files | Global and Local |
| How many users are affected by global initialization files? | All users on the system |
| How many users are affected by local initialization files? | specific to an individual user |
| Where are the global configuration files located at? | /etc directory |
| Where are the local configuration files located at? | user's home directory |
| When the bash is started as a login shell which file is executed first? | /etc/profile |
| When bash is started as an interactive shell, it executes first which file: | ~/.bashrc file |
| What type of access do you need to modify the global configuration? | Administrative access |
| What type of files can a user modify? | initialization files in their home directory |
| What is the emacs? | Popular Linux editor |
| By default, how many commands will be stored in the history file? | five hundred |
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