Linux Set 2
Terms
undefined, object
copy deck
- 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