• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/40

Click to flip

40 Cards in this Set

  • Front
  • Back
What command will test if a filename is writeable?
[-w filename]
How does the kernel determine how to execute a file?
by signature bytes at the beginning of the file
What are daemons used for?
performing routine tasks
In a shell script, what does export do?
makes a variable into an environment variable
What script command is [ symbolically linked to?
test
How are comments within a script noted?
with a #
What is cron used for?
running jobs at specific times
What command will test if a filename is executable?
[-x filename]
What does the ntsysv program do?
manage what daemons start at bootup
What file does cron use to configure what jobs to run?
crontab
Where are the init scripts for daemons loaded at startup stored?
/etc/rc.d/init.d
What command is used to extract a tarfile?
tar -xvf filename.tar
How are daemons loaded at boot denoted in ntsysv?
with an *
What daemon logs system messages?
syslogd
What is a daemon?
a process whose parent process is ID1
What is the appropriate hex code for the swap partition in fdisk?
82
What must be done after compiling a kernel?
run make modules and make modules_install
What shell command will test if one number is greater than another?
test n1 -gt n2
Where are the default home directory files usually copied from?
/etc/skel
What command will test if a filename is readable?
[-r filename]
What is the magic for a script?
#!
What are the signature bytes at the beginning of an executable called?
magic
How is a for construct ended?
with done
Where is a user's default home directory?
/home/username
What command is used to save a file to a tarfile?
tar -cvf filename.tar files
What two commands can be used to compile a kernel?
make zImage and make bzImage
What shell command will test if two numbers are equal?
test n1 -eq n2
What advantage does make bzImage have over make zImage?
allows for larger kernels
What is an if construct closed with?
fi
How can the contents of a shell variable be retrieved?
prepend the variable name with $
What shell command will test whether two strings are equal?
test s1 = s2
What command will test if a filename is empty?
[-s filename]
What shell command will test whether two numbers are not equal?
test n1 -ne n2
How is a case construct ended?
with esac
What is the for construct used for?
loop iteration
What does a case construct do?
allows the script to switch between statements depending on pattern match
What does the file construct do?
gives the script a choice of conditions and responses
Where are most log files located?
/var/log
What is the appropriate hex code for the native partition in fdisk?
83
What shell command will test whether two strings are not equal?
test s1 != s2