Log into your UNIX system and create the following directory hierarchy under your home directory:$$

lab$8/$

$$ personal$/$

$$ hobbies$/$

$$ finances$/$

$$ professional$/$

$$ courses$/$

$$ cst$126/$

$$ projects$/$

$$ misc$/$

$$ temp$/$

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Use appropriate commands to build this structure. $(3$ points$)$

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From the lab$8$ directory, use the command$$ls $-$alR $>$ lab$8\_$directory$$to create a complete listing of the subdirectories and files. $($Paste a screenshot$)$

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Analyze the output and explain what each column in the listing represents. $(2$ points$)$

Determine and record the absolute pathname of your login directory. Explain how you obtained this information. $(1$ point$)$

Execute the following commands in sequence:$$

a$.$ cd lab$8/$professional$/$courses$$

b$.$ cd $../$projects$$

c$.$ cd $../../$personal$/$hobbies$$

After each command, use pwd to display your current location. $($Paste a screenshot$)$

Explain how relative pathnames work based on these results. $(2$ points$)$

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Create a file named "unix$\_$commands.txt$"$ in the cst$126$ directory. In the file, list at least $5$ UNIX commands you've learned so far, with a brief description of each. $$

Use vi or nano to create and edit this file.$($Paste a screenshot of the file content$)(2$ points$)$

Use appropriate commands to:$$

a$.$ Copy "unix$\_$commands.txt$"$ to the projects directory$$

b$.$ Move the copy from projects to the temp directory$$

c$.$ Create a hard link to the original file in the hobbies directory$$

d$.$ Create a symbolic link to the original file in the finances directory$$

Explain the difference between hard links and symbolic links. $(3$ points$)$

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Change to the $/$etc directory and list its contents. $($Paste a screenshot$)$

Identify any symbolic links and explain their purpose. How many directories are in $/$etc$?(2$ points$)$

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Locate the file in $/$etc that contains attributes for all system users.$$

Display your own entry from this file and explain each field. $($Paste a screenshot$)(2$ points$)$

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Use the$$find$$command to locate all files in your lab$8$ directory that have been modified in the last $24$ hours. $($Paste a screenshot$)$

Explain the command you used. $(1$ point$)$

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Create a new file named "hidden$\_$file" in your home directory. Rename it to make it a hidden file. $($Paste a screenshot$)$

Verify that it's hidden and explain how to list hidden files. $(1$ point$)$

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Use the$$chmod$$command to change the permissions of "unix$\_$commands.txt$"$ so that:$$

You have read, write, and execute permissions$$

Your group has read and execute permissions$$

Others have only read permissions$$

Explain the numeric and symbolic methods to set these permissions. $(1$ point$)$