9-12 Flashcards
Which two commands can set shell features on and off?
Set
Shopt
What file sets the default shell for each user?
/etc/passwd
Which set of characters can perform arithmetic operations in the shell?
(())
What environmentL variable sets the format/looks of the shell?
PS1
TF: variable $VAR=”Fred Flintstone” is a valid method
False
T/F: The $1 and $2 variables are examples of system environmental variables.
False
T/F: The shell and and or boolean operators have equal precedence and are processed from left to right.
True
Select two commands that can display various shell variable contents.
Echo
Show
Ls
Env
Echo
Env
T/F: The BASH shell is based on the Bourne Shell from AT&T
True
_______ are simile to shell scripts, but are stored in RAM making them faster.
Functions
T/F: The BASH shell temrinal uses the vi editor terminal control and same shortcut keys.
False
Linux environmental variables are typically always ________.
Capitalized
What does the PATH environmental variable contain in the Linux environment?
Binary file search locations
A(n) ______ is the most common method of automatically adding command options to existing commands.
Alias
T/F: Both & and | are boolean
False
What characters will redirect standard command error output to another location?
2>
Select all the shells ininux that can be set on a users login information.
All
Variable rules
All of the above
What set of characters can be used in shell commands to create, remove, or list a sequence of files
or directories with one command?
{}
braceexpand
Select the two sets of characters that can be used to perform command substitution.
()
T/F: Dnf, by default deletes all downloaded packages after successful package installation.
True
T/F: RPM files are built for a specific Linux distribution, release, and processor architecture.
True
Which rpn command will display info about an installed software program?
Rpm -qi
T/F: The dnf command will attempt to resolve software dependencies.
True
Which rpm command will display all associated files with an installed software program?
Rpm -ql
What command will check if a tar program is compatible with your system and installed software?
./configure
Debian uses ______ to manage dpkg software packages.
apt (aptget)
GPG stands for:
GNU privacy guard
Which rpm command will display the rpm package a file was installed from?
Rpm -qf
T/F: Using the dnf list command will display only the locally installed packages.
False
T/F: Dnf does not support wildcards.
False
T/F: dnf supports searching software repositories based on keywords.
True
DNF stands for:
Dandified yum
Which rpm command is the same as using dbf remove?
Rpm -e
T/F: Dnf is a newer replacement for rpm.
False
RPM stands for:
RPM package manager
T/F: The rpm –rebuilddb can repair a corrupt rpm database.
True
Extract tar to other location
-C
Capital C
What dnf command will remove obsolete packages, update current, install new?
Dnf upgrade
T/F: Tar-based installs can be managed with rpm.
True
Where is the recommended tar install location?
/opt
What’s the main configuration file for dnf?
/etc/dnf/dnf.conf
It has two “dnf”s.
What is the filename extension for dnf repos?
.repo
PMS keeps track with a:
Database
T/F: no graphical frontend for dnf.
False
What rpm command will install a package or update a package if it’s already installed?
Rpm -Uvh
PMS stands for:
Package management system
By default, dnf only supports RH/Fedora repos.
True
What command will copy a tar program to it’s proper or specified location?
Make install
