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You need to see the last fifteen lines of the files dog, cat and horse. What command should you use? tail -15 dog cat horse The tail utility displays the end of a file. The -15 tells
tail to display the last fifteen lines of each specified file. \
Who owns the data dictionary? The SYS user owns the data dictionary. The SYS and SYSTEM users are created when the database is created. You routinely compress old log files. You now need to
examine a log from two months ago. In order to view its contents without
first having to decompress it, use the _________ utility.
The zcat utility allows you to examine the contents of
a compressed file much the same way that cat displays a file.
You suspect that you have two commands with the same name as the command is not producing the expected results. What command can you use to determine the location of the command being run? which The which command searches your path until it finds a
command that matches the command you are looking for and displays its full
path.
You locate a command in the /bin directory but do not know what it does. What command can you use to determine its purpose? whatis The whatis command displays a summary line from the man
page for the specified command.
You wish to create a link to the /data directory in bob’s home directory so you issue the command ln /data /home/bob/datalink but the command fails. What option should you use in this command line to be successful? Use the -F option In order to create a link to a directory you must use the -F option. When you issue the command ls -l, the first character
of the resulting display represents the file’s ___________.
The first character of the permission block designates
the type of file that is being displayed.
What utility can you use to show a dynamic listing of running processes? __________ top The top utility shows a listing of all running processes
that is dynamically updated.
Where is standard output usually directed? to the screen or display By default, your shell directs standard output to your screen or display.
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