IFT 250 Module 4 Exam Questions and
Answers 100% Solved | Rated A+
ps - ✔✔report a snapshot of current processes
top - ✔✔display tasks; get a real time view of the system utilization by our
processes
jobs - ✔✔list active jobs
bg - ✔✔place a job in the background
fg - ✔✔place a job in the foreground
kill - ✔✔send a signal to terminate a process
killall - ✔✔kill processes by name
shutdown - ✔✔shutdown or reboot the system
How does a process work? - ✔✔When a system starts up, the kernel
initiates a few of its own activities as processes and launches a program
called init. init, in turn, runs a series of shell scripts (located in /etc) called
1
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
, init scripts, which start all the system services. Many of these services are
implemented as daemon programs, programs that just sit in the
background and do their thing without having any user interface. So, even if
we are not logged in, the system is at least a little busy performing routine
stuff.
printenv - ✔✔Print part or all of the environment
set - ✔✔set shell options
export - ✔✔export environment to subsequently executed programs
alias - ✔✔create an alias for a command
What is the environment? - ✔✔The shell maintains a body of information
during our shell session called the environment. We can use the
environment to customize the shell experience
STAT (when using command ps) - ✔✔Process status code
TIME (when using command ps) - ✔✔Total CPU usage time
CMD (when using command ps) - ✔✔Name of executable/command
2
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
Answers 100% Solved | Rated A+
ps - ✔✔report a snapshot of current processes
top - ✔✔display tasks; get a real time view of the system utilization by our
processes
jobs - ✔✔list active jobs
bg - ✔✔place a job in the background
fg - ✔✔place a job in the foreground
kill - ✔✔send a signal to terminate a process
killall - ✔✔kill processes by name
shutdown - ✔✔shutdown or reboot the system
How does a process work? - ✔✔When a system starts up, the kernel
initiates a few of its own activities as processes and launches a program
called init. init, in turn, runs a series of shell scripts (located in /etc) called
1
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
, init scripts, which start all the system services. Many of these services are
implemented as daemon programs, programs that just sit in the
background and do their thing without having any user interface. So, even if
we are not logged in, the system is at least a little busy performing routine
stuff.
printenv - ✔✔Print part or all of the environment
set - ✔✔set shell options
export - ✔✔export environment to subsequently executed programs
alias - ✔✔create an alias for a command
What is the environment? - ✔✔The shell maintains a body of information
during our shell session called the environment. We can use the
environment to customize the shell experience
STAT (when using command ps) - ✔✔Process status code
TIME (when using command ps) - ✔✔Total CPU usage time
CMD (when using command ps) - ✔✔Name of executable/command
2
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
