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-====== Weekly Labs ======
-To do the labs, you must have an EECS account. Activate your account from any browser by following [[https://webapp.eecs.yorku.ca/activ8/|this link]].
-If you are in the lab, login with username active8 (password:active8) to activate your account.
-===== Lab 4 - September 30 and October 1 =====
-Study tutorial 8 from [[http://www.cs.sfu.ca/~ggbaker/reference/unix/|here]]. Try the examples and do the exercises.
-===== Lab 3 - September 23 and 24 =====
-Study this [[http://www.ooblick.com/text/sh/|Bourne shell tutorial]] as well as this [[http://en.wikibooks.org/wiki/Bourne_Shell_Scripting|wikibook]] (for reference only).
-Answer this [[https://www.eecs.yorku.ca/course_archive/2019-20/F/2031/Labs/Lab3/question.html|question]]. Submit your answer by midnight on Tuesday.
-===== Lab 2 - September 16 and 17 =====
-Study the tutorials 5 and 6 from [[http://www.cs.sfu.ca/~ggbaker/reference/unix/|here]]. Try the examples and do the exercises.
-Complete the following tasks:
-  - Using this {{:pb1.txt|phone book}}, do the following by issuing one command only:
-    * Display entries of people whose names contain the substring "alex", case-insensitive. (The output should be the entries of alex johnson and Alexander Smith.)
-    * Display entries of people whose phone number ends in 2.
-    * Display only the names of people whose phone number does not contain the number 3.
-    * List all area codes in the phone book sorted numerically
-    * List the names of contacts in the 905 area code
-  - Suppose myFile is in your working directory. Specify the command(s) you would use to do the following:
-    * Give everyone permission to read myFile; do not change any other privileges.
-    * Permit the owner (you) and group members to read and write the file; remove all privileges from everyone else.
-    * Remove writing privileges from everyone but the owner.
-    * Give the owner and group members permission to execute myFile, while giving the owner sole permission to read and write the file.
-  - Suppose you have a directory named myStuff in your working directory. Specify the command(s) you would use to do the following:
-    * Give everyone permission to list files in myStuff; do not change any other privileges.
-    * Permit the owner and group members to list, remove, or add files; remove all privileges from everyone else.
-    * Remove writing privileges from everyone but the owner.
-    * Give the owner and group members permission to execute myStuff, while giving the owner sole permission to read and write the directory.
-  - Perform the following tasks. If you have less that 10 .txt files in your account, create some empty ones using the touch command
-    * List the number of .txt files in your home directory (including any subdirectories)
-    * List any 10 of the above files, each file preceded by the number of lines in it
-    * List all empty .txt files in your home directory (including any subdirectories)
-    * List all files that were modified in the last day in your home directory (including any subdirectories)
-Don't forger to look at the man page of each command if you are not sure how to use them.
-Nothing to submit this week as well (but next week there will be)!
-===== Lab 1 - September 9 and 10 =====
-Study the introduction and the first four tutorials [[http://www.cs.sfu.ca/~ggbaker/reference/unix/|here]]. Try the examples and do the exercises.
-Complete the following tasks:
-  - The echo command takes a line that you type and repeats it back on the screen. Use it with any text you want and redirect the output to a file named myFile.
-  - Use the echo command to input 5 more lines and append them to file myFile, which will contain a total of 6 lines of text.
-  - Append to file myFile the output of the following commands: who, whoami, and date.
-  - Create a set of text files and name them backgammon, backpacking, baseball, boxing, biking, chess, fencing, blackjack, groupA, groupB, groupX, groupY.
-    * How would you use cat to show the contents of the files ending in ing?
-    * How would you list any files containing x or X in the file names?
-    * How would you show the contents of files with names containing o?
-    * How would you show the contents of the files backgammon, backpacking and blackjack using just one command?
-    * How would you copy the contents of all 3 files backgammon, backpacking and blackjack to a file named all3 using just one command?
-  - Given {{:phone_book.txt|this file}}, specify the command(s) you would use to do the following:
-    * Count the number of people whose area code is 905. Display just the count (not the entries).
-    * Display the entries of the babysitters.
-    * Count the number of friends whose names are in phone_book. Display just the count (not the entries).
-To answer question 5, read ahead in the tutorials on grep.
-There is nothing to submit this week!