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Linux And LPIC – 1 Guide To Linux Cert 7E – Jason Eckert (1)
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At the command prompt, type pwd and press Enter. What directory are you currently using? Type Desktop and press Enter. Next, type pwd and press Enter. What directory are you currently using? 13. Type exit and press Enter to log out of your shell. Discovery Exercises Discovery Exercise 7-1 Estimated Time: 20 minutes Objective: Create commands that use shell features.
Description: Name the command that can be used to do each of the following: a. Create an alias called mm that displays only filesystems that are mounted and contain an ext4 filesystem. b. Create and export a variable called NEWHOME that is equivalent to the value contained in the HOME variable. c. Find all files that start with the word “host” starting from the /etc directory; save the standard output to a file called file1 and save the standard error to the same file.
d. Display only the lines from the output of the set command that have the word “bash” in them. This output on the terminal screen should be sorted alphabetically. e. Display only the user name (first field) in the colon-delimited /etc/passwd file and save the output to a file called users in the current directory.
Discovery Exercise 7-2 Estimated Time: 20 minutes Objective: Explain shell piping and redirection. Description: What would happen if the user executed the following commands? cp /etc/hosts ~ cd tr a A
ls /etc/hosts /etc/h | tr h H Discovery Exercise 7-4 Estimated Time: 20 minutes Objective: Create test statements. Description: Name the test statement that can be used to test the following scenarios: a. The user has read permission to the /etc/hosts file. b. The user has read and execute permission to the /etc directory. c. The contents of the variable $TEST are equal to the string “success.” d. The contents of the variable $TEST are numerically equal to the contents of the variable $RESULT. e.
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