Linux Ch2 first half

You need a brief description of what the whoami command does, but you've forgotten its details. Which of the following help commands would give you a short description of the whoami

• A) help -s whoami
• B) help -m whoami
• C) help -d whoami
• D) help whoami

Which of the following commands would you use to view the info node pages for the sysctrl command?

• A) info "sysctrl"
• B) info -k sysctrl
• C) info -w sysctrl
• D) info sysctrl

You want to ensure that an alias remains persistent across all reboots of your Linux server. In which of the following files should you place the alias command to make it persistent?

• A) /home/user/.bashrc
• B) /etc/profile
• C) /home/user/.bash_profile
• D) /etc/resolv.conf
• E) /etc/securetty

Which of the following actions correctly defines a persistent alias?

• A) Adding the alias to the $ALIAS environment variable
• B) Using the alias command with the -P option at the shell prompt
• C) Adding the alias to the /etc/default/alias.conf file
• D) Adding the alias command to the appropriate shell configuration file

Anna, a system administrator, wants to set an environment variable that is available every time she logs in. Currently, she has to set the variable manually each time a terminal is opened. Which of the following files should Anna modify to make the variable a global environment variable? (Select two.)

• A) ~/.bash_history
• B) ~/.bash_logout
• C) ~/.bash_profile
• D) /etc/profile
• E) ~/.bashrc

Which of the following commands displays the value of the LANG environmental variable currently set for the language the operating system uses?

• echo %LANG
• echo %LANG%
• echo $LANG
• echo LANG

You want a specific entry to be written to a log file each time you log in, and this action should only apply to your account. You are using the bash shell. Which of the following configuration files is the BEST to modify to achieve this?

• A) .sh
• B) .profile
• C) .bashrc
• D) /etc/profile

A bash script developer wants to capture the output of a script named myscript into a file called testfile.txt. Which of the following commands will record the output of the script into testfile.txt?

• A) myscript | testfile.txt
• B) myscript | echo | testfile.txt
• C) echo myscript >> testfile.txt
• D) myscript >> testfile.txt