Toggle navigation
Home
Ask A Question
Answer Questions
Users
Support/FAQ
Login
Register
207LinuxUnix.docx
Details
Question Title:
Linux/Unix Assignment , due date tonight
View the Question
Preview - Click download on the question page for the full document.
<!DOCTYPE html PUBLIC "-//ABISOURCE//DTD XHTML plus AWML 2.2//EN" "http://www.abisource.com/2004/xhtml-awml/xhtml-awml.mod"><html xmlns="http://www.w3.org/1999/xhtml" xmlns:awml="http://www.abisource.com/2004/xhtml-awml/"> <head> <meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" /> <title> Abiword HTML Document </title> </head> <body> <div> <p> Assignment #1 </p> <p> 10 points </p> <p> Please answer the following questions: </p> <p style="margin-bottom:0.000000pt"> <span style="font-size:10pt;font-family:'Times New Roman'">1. You have just finished a 25-page paper that you have written using vi editor. The file containing the paper is called /assignments/data_sources. After your instructor has briefly looked at the paper, he recommends that you change all instances of the reference “data is” to “data are” before you submit it. What is the command to locate these references in the file for a quick assessment of how much you have to change?</span> </p> <p style="margin-bottom:0.000000pt"> </p> <p style="margin-bottom:0.000000pt"> </p> <p> <span style="font-style:italic;font-size:10pt;font-family:'Times New Roman'">Answer: _______</span><span style="font-size:13.5pt;font-family:'Arial';color:#222222;background:#ffffff">grep "data is" /assignments/data_sources</span><span style="font-style:italic;font-size:10pt;font-family:'Times New Roman'"> ______________________________________________________________________________</span>(0.5) </p> <p style="margin-bottom:0.000000pt"> 2.<span style="font-size:10pt;font-family:'Times New Roman'">You are using the</span><span style="font-style:italic;font-size:10pt;font-family:'Times New Roman'">grep</span><span style="font-size:10pt;font-family:'Times New Roman'"> command, but it is only searching through files in your immediate home directory. What option enables you to search through subdirectories below your home directory?</span> </p> <p style="margin-bottom:0.000000pt;margin-left:36.000000pt"> </p> <p style="margin-bottom:0.000000pt"> <span style="font-style:italic;font-size:10pt;font-family:'Times New Roman'">Answer:</span><span style="font-size:10pt;font-family:'Times New Roman'">__</span><span style="font-size:13.5pt;font-family:'Arial';color:#222222;background:#ffffff">-r</span><span style="font-size:10pt;font-family:'Times New Roman'">___________________________________________________________________________</span> </p> <p> (0.5) </p> <p style="margin-bottom:0.000000pt"> 3.<span style="font-size:10pt;font-family:'Times New Roman'"> Each time you list the files in your home directory, the output scrolls by so fast you can’t read it. What would be the command(s) that would enable you to view the output one screen at a time?</span> </p> <p style="margin-bottom:0.000000pt"> </p> <p> <span style="font-style:italic;font-size:10pt;font-family:'Times New Roman'">Answer:</span><span style="font-size:10pt;font-family:'Times New Roman'"></span><span style="font-style:italic;font-size:10pt;font-family:'Times New Roman'">__</span><span style="font-size:13.5pt;font-family:'Arial';color:#222222;background:#ffffff">ls -l | more</span><span style="font-style:italic;font-size:10pt;font-family:'Times New Roman'"> ________________________________________________________________________</span> </p> <p> (0.5) </p> <p style="margin-bottom:0.000000pt"> <span style="font-size:10pt;font-family:'Times New Roman'">4. When you enter the command</span><span style="font-style:italic;font-size:10pt;font-family:'Times New Roman'">grep Linux /info/Linux_features | head</span><span style="font-size:10pt;font-family:'Times New Roman'">, what is the maximum number of lines that will be displayed?</span> </p> <p style="margin-bottom:0.000000pt"> </p> <p style="margin-bottom:0.000000pt"> <span style="font-style:italic;font-size:10pt;font-family:'Times New Roman'">Answer:</span><span style="font-size:10pt;font-family:'Times New Roman'">_____________________ lines</span> </p> <p> </p> <p> (0.5) </p> <p> </p> <p style="margin-bottom:0.000000pt"> 5.<span style="font-size:10pt;font-family:'Times New Roman'">What is the general format for using the pipe operator?</span> </p> <p> </p> <p> <span style="font-style:italic">Answer:</span> _____________________________________________________________________________ </p> <p> (0.5) </p> <p style="margin-bottom:0.000000pt"> 6.<span style="font-size:10pt;font-family:'Times New Roman'"> What is the command to find the instances in which the word “host” is used in the /etc directory.</span> </p> <p style="margin-bottom:0.000000pt"> </p> <p style="margin-bottom:0.000000pt"> <span style="font-style:italic;font-size:10pt;font-family:'Times New Roman'">Answer:</span><span style="font-size:10pt;font-family:'Times New Roman'"> ________________________________________________________________________</span> </p> <p> </p> <p> (0.5) </p> <p style="margin-bottom:0.000000pt"> 7.<span style="font-size:10pt;font-family:'Times New Roman'"> What is the command to find out which lines in the my_list file contain the word “Foot”.</span> </p> <p style="margin-bottom:0.000000pt"> </p> <p style="margin-bottom:0.000000pt"> <span style="font-style:italic;font-size:10pt;font-family:'Times New Roman'">Answer</span><span style="font-size:10pt;font-family:'Times New Roman'">: __________________________________________________________________</span> </p> <p> (0.5) </p> <p awml:style="EOC NL"> 8.<span style="font-size:10pt">Create a file called trees, containing the following individual lines:</span> </p> <p style="margin-bottom:0.000000pt;margin-top:4.000000pt;margin-right:1.000000pt;margin-left:72.000000pt;text-indent:-18.000000pt"> <span style="font-size:10pt;font-family:'Times New Roman'">Oak tree</span> </p> <p style="margin-bottom:0.000000pt;margin-top:4.000000pt;margin-right:1.000000pt;margin-left:72.000000pt;text-indent:-18.000000pt"> <span style="font-size:10pt;font-family:'Times New Roman'">Pine tree</span> </p> <p style="margin-bottom:0.000000pt;margin-top:4.000000pt;margin-right:1.000000pt;margin-left:72.000000pt;text-indent:-18.000000pt"> <span style="font-size:10pt;font-family:'Times New Roman'">Spruce tree</span> </p> <p style="margin-bottom:0.000000pt;margin-top:4.000000pt;margin-right:1.000000pt;margin-left:72.000000pt;text-indent:-18.000000pt"> <span style="font-size:10pt;font-family:'Times New Roman'">Cottonwood</span> </p> <p style="margin-bottom:0.000000pt;margin-top:4.000000pt;margin-right:1.000000pt;margin-left:72.000000pt;text-indent:-18.000000pt"> <span style="font-size:10pt;font-family:'Times New Roman'">Maple tree</span> </p> <p style="margin-bottom:0.000000pt;margin-left:36.000000pt;text-indent:-18.000000pt"> </p> <p style="margin-bottom:0.000000pt"> <span style="font-size:10pt;font-family:'Times New Roman'">Use the vi editor to create a file called more_trees and copy in the contents of the trees file (if the first line is blank, delete it). Next, add the following trees at the end of the list.</span> </p> <p style="margin-bottom:0.000000pt;margin-left:54.000000pt"> <span style="font-size:10pt;font-family:'Times New Roman'">Redwood</span> </p> <p style="margin-bottom:0.000000pt;margin-left:54.000000pt"> <span style="font-size:10pt;font-family:'Times New Roman'">Willow tree</span> </p> <p> What is the command to compare the trees and more_trees files and show the differences in terms of individual lines that differ? Submit both files and a screenshot after you executed the command. </p> <p> <span style="font-style:italic">Answer</span>: _______________________________________________________<span style="font-style:italic">.</span> </p> <p> <span style="font-style:italic">Insert screen shot</span> </p> <p> (0.5) </p> <p> 9. Find a command to compare the differences between three files (file1 file2 file3) and that creates output for individual lines. </p> <p> <span style="font-style:italic">Answer:</span> _________________________________________________________________________ </p> <p> (0.5) </p> <p style="margin-bottom:0.000000pt"> 10. Your international company is scheduling a meeting among managers in Canada, the United States, Spain, Sweden, and Hong Kong on the basis of Greenwich Mean Time (GMT). What command enables you to display the current time in GMT? </p> <p> </p> <p> <span style="font-style:italic">Answer:</span><span style="font-style:italic">_______________________________________________________</span> </p> <p> (0.5) </p> <p style="margin-bottom:0.000000pt"> 11. It’s late and you have been working all day to finish a report. Before you go home you want to copy your report file rpt1. The copy of your report file is in the same directory and the name of that file is rpt1_copy. What copy command should you use to ensure that you don’t inadvertently copy an older report file over the newer report file you’ve been working on for the last four hours? </p> <p> </p> <p> <span style="font-style:italic">Answer:</span><span style="font-style:italic">______________________________________________________</span> </p> <p> (0.5) </p> <p> 12. Your boss wants to use the command to view hidden files and also wants to know how to find them among other files. What do you tell her? </p> <p> <span style="font-style:italic">Answer: _____________________________________________________________________________</span> </p> <p> <span style="font-style:italic">____________________________________________________________________________________</span> </p> <p> <span style="font-style:italic">____________________________________________________________________________________</span> </p> <p> (0.5) </p> <p> 13. You have many files that begin with the word “account” and that end with two digits to designate a year, such as account00, account 01, and so on. What is the command that enables you to view all of these files that start with account and that end with two digits? </p> <p> Answer: ___________________________________________________________________________. </p> <p> (0.5) </p> <p> </p> <p> 14. Perform the following tasks.<span style="color:#ff0000">Include screen shots in your answer.</span> </p> <p> Make a directory under your home directory called documents. Next make a directory under the documents directory called spreadsheets. What is the absolute path for the spreadsheets directory? </p> <p> <span style="color:#ff0000">What are the commands you used?</span> </p> <p> <span style="color:#ff0000">(0.25)</span> </p> <p> <span style="color:#ff0000">What is the absolute path for the spreadsheets directory?</span> </p> <p> <span style="color:#ff0000">(0.25)</span> </p> <p> Use the cat command to create a two-line file in your home directory called datainfo. On the first line enter 144 and on the second line enter 288. After the file is created, copy it from your home directory to the spreadsheets directory you created. </p> <p> <span style="color:#ff0000">What commands did you use?</span> </p> <p> <span style="color:#ff0000"> (0.5)</span> </p> <p> Append the current month’s calendar to the datainfo file that is in your home directory. Next copy your changed datainfo file over the older datainfo file in the spreadsheets directory, but use the copy option that prompts you before you overwrite the file in the spreadsheets directory. Check the contents of the datainfo file in the spreadsheets directory to make certain your copy was successful. </p> <p> <span style="color:#ff0000">What commands did you use?</span> </p> <p> <span style="color:#ff0000"> (0.5)</span> </p> <p> Make the spreadsheets directory your working directory. Make copies of the datainfo file in the spreadsheets directory, so that one copy is named myinfo and one is named datadata. Next, use a wildcard character to list all files that start with “data.” Use a wildcard character to list all files that end with “info.” Use a wildcard character combination to list all files that have “ata” as the second, third, and fourth characters. </p> <p> <span style="color:#ff0000">What commands did you use?</span> </p> <p> <span style="color:#ff0000">(0.5)</span> </p> <p> 15.Write all the commands to accomplish this (and the screen shots). Submit also all the files you have created. </p> <p> A)From your home directory create new directory called assignment1 </p> <p> ______________ </p> <p> B) Change directory to assignment1 </p> <p> _____________ </p> <p> C)What is your current working directory? </p> <p> ______________ </p> <p> D)Create a file called sys.info and insert into that file all information about your system. </p> <p> What is the command?________________ </p> <p> E)Append to the sys.info file current date. </p> <p> What is the command?________________ </p> <p> F)Append to the file sys.info the names of the users currently logged in, together with their terminal device numbers, the times they logged in. </p> <p> What is the command?________________ </p> <p> G)Search for your login in sys.info and output it to a new file (use your login name for the file name). </p> <p> What is the command?________________ </p> <p> H)Combine the content of these files into a new file (new.file) using one command. </p> <p> What is the command?________________ </p> <p> I)Count how many times 2015 appears in the new.file using one command. </p> <p> What is the command?________________ </p> <p> </p> <p> J)Show lines that differ between sys.info and new.file. </p> <p> What is the command?________________ </p> <p> <span style="color:#ff0000">(1)</span> </p> <p> <span style="color:#ff0000">3 files + screen shots =0.5</span> </p> <p> </p> <p> </p> <p> </p> <p> </p> <p> </p> </div> </body></html> ">
