Red Hat System Administration I

To begin, create sets of empty practice files to use in this lab. If an intended shell expansion shortcut is not immediately recognized, students are expected to use the solution to learn and practice. Use shell tab completion to locate file path names easily.

Create a total of 12 files with names tv_seasonX_episodeY.ogg. Replace X with the season number and Y with that season's episode, for two seasons of six episodes each.

[student@serverX ~]$ touch tv_season{1..2}_episode{1..6}.ogg
[student@serverX ~]$ ls -l

As the author of a successful series of mystery novels, your next bestseller's chapters are being edited for publishing. Create a total of eight files with names mystery_chapterX.odf. Replace X with the numbers 1 through 8.

[student@serverX ~]$ touch mystery_chapter{1..8}.odf
[student@serverX ~]$ ls -l

To organize the TV episodes, create two subdirectories named season1 and season2 under the existing Videos directory. Use one command.

[student@serverX ~]$ mkdir Videos/season{1..2}
[student@serverX ~]$ ls -lR

Move the appropriate TV episodes into the season subdirectories. Use only two commands, specifying destinations using relative syntax.

[student@serverX ~]$ mv tv_season1* Videos/season1
[student@serverX ~]$ mv tv_season2* Videos/season2
[student@serverX ~]$ ls -lR

To organize the mystery book chapters, create a two-level directory hierarchy with one command. Create my_bestseller under the existing Documents directory, and chapters beneath the new my_bestseller directory.

[student@serverX ~]$ mkdir -p Documents/my_bestseller/chapters
[student@serverX ~]$ ls -lR

Using one command, create three more subdirectories directly under the my_bestseller directory. Name these subdirectories editor, plot_change, and vacation. The create parent option is not needed since the my_bestseller parent directory already exists.

[student@serverX ~]$ mkdir Documents/my_bestseller/{editor,plot_change,vacation}
[student@serverX ~]$ ls -lR

Change to the chapters directory. Using the home directory shortcut to specify the source files, move all book chapters into the chapters directory, which is now your current directory. What is the simplest syntax to specify the destination directory?

[student@serverX ~]$ cd Documents/my_bestseller/chapters
[student@serverX chapters]$ mv ~/mystery_chapter* .
[student@serverX chapters]$ ls -l

The first two chapters are sent to the editor for review. To remember to not modify these chapters during the review, move those two chapters only to the editor directory. Use relative syntax starting from the chapters subdirectory.

[student@serverX chapters]$ mv mystery_chapter1.odf mystery_chapter2.odf ../editor
[student@serverX chapters]$ ls -l
[student@serverX chapters]$ ls -l ../editor

Chapters 7 and 8 will be written while on vacation. Move the files from chapters to vacation. Use one command without wildcard characters.

[student@serverX chapters]$ mv mystery_chapter7.odf mystery_chapter8.odf ../vacation
[student@serverX chapters]$ ls -l
[student@serverX chapters]$ ls -l ../vacation

With one command, change the working directory to the season 2 TV episodes location, then copy the first episode of the season to the vacation directory.

[student@serverX chapters]$ cd ~/Videos/season2
[student@serverX season2]$ cp tv_season2_episode1.ogg ~/Documents/my_bestseller/vacation

With one command, change the working directory to vacation, then list its files. Episode 2 is also needed. Return to the season2 directory using the previous working directory shortcut. This will succeed if the last directory change was accomplished with one command. Copy the episode 2 file into vacation. Return to vacation using the shortcut again.

[student@serverX season2]$ cd ~/Documents/my_bestseller/vacation
[student@serverX vacation]$ ls -l
[student@serverX vacation]$ cd -
[student@serverX season2]$ cp tv_season2_episode2.ogg ~/Documents/my_bestseller/vacation
[student@serverX vacation]$ cd -
[student@serverX vacation]$ ls -l

Chapters 5 and 6 may need a plot change. To prevent these changes from modifying original files, copy both files into plot_change. Move up one directory to vacation's parent directory, then use one command from there.

[student@serverX vacation]$ cd ..
[student@serverX my_bestseller]$ cp chapters/mystery_chapter[56].odf plot_change
[student@serverX my_bestseller]$ ls -l chapters
[student@serverX my_bestseller]$ ls -l plot_change

To track changes, make three backups of chapter 5. Change to the plot_change directory. Copy mystery_chapter5.odf as a new file name to include the full date (Year-Mo-Da). Make another copy appending the current timestamp (as the number of seconds since the epoch) to ensure a unique file name. Also make a copy appending the current user ($USER) to the file name. See the solution for the syntax of any you are unsure of (like what arguments to pass to the date command).

[student@serverX my_bestseller]$ cd plot_change
[student@serverX plot_change]$ cp mystery_chapter5.odf mystery_chapter5_$(date +%F).odf
[student@serverX plot_change]$ cp mystery_chapter5.odf mystery_chapter5_$(date +%s).odf
[student@serverX plot_change]$ cp mystery_chapter5.odf mystery_chapter5_$USER.odf
[student@serverX plot_change]$ ls -l

Note, we could also make the same backups of the chapter 6 files too.

The plot changes were not successful. Delete the plot_change directory. First, delete all of the files in the plot_change directory. Change directory up one level because the directory cannot be deleted while it is the working directory. Try to delete the directory using the rm command without the recursive option. This attempt should fail. Now use the rmdir command, which will succeed.

[student@serverX plot_change]$ rm mystery*
[student@serverX plot_change]$ cd ..
[student@serverX my_bestseller]$ rm plot_change
rm: cannot remove 'plot_change': Is a directory
[student@serverX my_bestseller]$ rmdir plot_change
[student@serverX my_bestseller]$ ls -l

When the vacation is over, the vacation directory is no longer needed. Delete it using the rm command with the recursive option.

When finished, return to the home directory.

[student@serverX my_bestseller]$ rm -r vacation
[student@serverX my_bestseller]$ ls -l
[student@serverX my_bestseller]$ cd