Lesson 1
On which of the following CPU types does Linux run?
x86
x86-64
Concatenate files and print on the standard output.
Cat
List directory contents
ls
Which command will display the default target on a computer running systemd?
systemctl get-default
Comand to install GRUB
grub-install
Configure dynamic linker run-time bindings
ldconfig
Which command can send a message to all users logged into a system?
wall
Command to display value of environment variable
Echo $
Export value of environment variable to child shells.
export
Which systemctl subcommand is used to switch between runlevels?
isolate
Command to remove environment variable
Unset
Print information from object files
objdump
Which directory is used to store information about currently running processes on the Linux system?
/proc
Command to list shared objects dependencies of a program
LDD
Display information about ELF files (ELF stands for executable and linkable format)
readelf