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Homework and Emergencies Homework & Coursework Questions Automating Linux Script
# 1  
Old 09-23-2013
Automating Linux Script
1. The problem statement, all variables and given/known data:
I want to automate the creation or processing of the following:
  • Directory and subdirectory creation for your scenario company
  • Files in each of the directories
  • Symbolic links from 2 subdirectories to their parent directories
  • Setting appropriate file permissions for the directories and files:
    • Directories
      • the file owner can read, modify and access the scenario company directories,
      • the group members can read and access the scenario company directories,
      • everyone else has no access.
    • Files
      • The owner can read and modify the file,
      • the group members can only read the file
      • everyone else has no permissions at all.
  • Include branching to only execute the directory, file and link commands only if the directory or file does not already exist.
  • Set up an error log file with commands to route the errors messages into it.
However, I have only been using Linux for a few weeks now and this is proving to be extremely complicated. I have read tutorials on automating but cannot understand it. This is a school assignment due today by 11:59pm central time. Any assistance would be greatly appreciated!


2. Relevant commands, code, scripts, algorithms:
Here is the script that I have completed through my previous assignments, it the base script that they want us to automate.
Code:
 \KGS_Home\
  Testing \+
  |- Beta
  |- DLC
  |- IndyGames
  Programming \+
  |- MainStory
  |- SideStory
  |- CharacterStats
  ArtDesign \+
  |- CoverArt
  |- Background
  |- Characters
  Marketing \+
  |- Trailers
  |- Demos
  |- Posters
  
  
  mkdir -v \KGS_Home
  cd KGS_Home
  mkdir \Testing
  mkdir \Programming
  mkdir \ArtDesign
  mkdir \Marketing
  cd Testing
  mkdir \Beta
  mkdir \DLC
  mkdir \IndyGames
  cd ..
  cd Programming
  mkdir \MainStory
  mkdir \SideStory
  mkdir \CharacterStats
  cd ..
  cd ArtDesign
  mkdir \CoverArt
  mkdir \Background
  mkdir \Characters
  cd ..
  cd Marketing
  mkdir \Trailers
  mkdir \Demos
  mkdir \Posters
  cd..
  ln -s \Testing\Beta \Beta
  ln -s \Testing\DLC \DLC
  ln -s \Testing\IndyGames \IndyGames
  ln -s \Programming\MainStory \MainStory
  ln -s \Programming\SideStory \SideStory
  ln -s \Programming\CharacterStats \CharacterStats
  ln -s \ArtDesign\CoverArt \CoverArt
  ln -s \ArtDesign\Background \Background
  ln -s \ArtDesign\Characters \Characters
  ln -s \Marketing\Trailers \Trailers
  ln -s \Marketing\Demos \Demos
  ln -s \Marketing\Posters \Posters
  chmod 750 –R /Testing
  chmod 750 –R /Programming
  chmod 750 –R /ArtDesign
  chmod 750 –R /Marketing
  touch Testing/TestingFile
  touch Programming/ProgrammingFile
  touch ArtDesign/ArtDesignFile
  touch Marketing/MarketingFile
  chmod 740 –R Testing/TestingFile
  chmod 740 –R Programming/ProgrammingFile
  chmod 740 –R ArtDesign/ArtDesignFile
  chmod 740 –R Marketing/MarketingFile


3. The attempts at a solution (include all code and scripts):
I have been unable to make any attempts because my professor neglected to explain how to automate at all. I have researched the topic but found little to no definitive results.


4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):
Colorado Technical University Online, Colorado, USA, Majid Mohammad, CS126-1303B-04 : Unix Fundamentals
Last edited by vbe; 09-23-2013 at 01:32 PM..
# 2  
Old 09-23-2013
What you want to do is unclear to me...
Are these backslashes artefacts? if not what OS are you using with which shell? For its not very UNIX to me...
What should I understand by:
Code:
 \KGS_Home\
  Testing \+
  |- Beta
  |- DLC
  |- IndyGames
  Programming \+
  |- MainStory
  |- SideStory
  |- CharacterStats
  ArtDesign \+
  |- CoverArt
  |- Background
  |- Characters
  Marketing \+
  |- Trailers
  |- Demos
  |- Posters

What do you understand by automating?
# 3  
Old 09-23-2013
What I provided was the contents of a Vi file my instructor wanted me to make. The section you are asking about is simply a showing of by home directory for an imaginary company and its directories and sub-directories. That is simply to show how they connect to each other. What I am trying to automate is the process of creating those directories and sub-directories on various company computers without having to type everything out for each computer.
# 4  
Old 09-23-2013
So we agree looking at what you posted could be used as a basic script to create what you want, optimizing the code as it is is waste of time ( like using mkdir -p ..)
You could maybe save a couple of lines in the chmod process, that is going at a higher level and use -R 755 * and -R 740 [TPAM]*/*File
Put all that in script and make it executable then it is just copying your script to the new computers and executing it or you may look at the command rdist and see if you will not use its facilites...
# 5  
Old 09-23-2013
What would -R 755 * and -R 740 [TPAM]*/*File do exactly?

---------- Post updated at 01:23 PM ---------- Previous update was at 01:22 PM ----------

I just looked into rdist but it looks like that isn't something my instructor intends for us to use
Last edited by Scott; 09-23-2013 at 03:35 PM.. Reason: Code tags
# 6  
Old 09-23-2013
chmod -R 755 * would recursively change every file and directory in the current directory (except anything beginning with a . (dot) in the current directory) to have permissions rwxr-xr-x.

chmod -R 740 [TPAM]*/* would recursively change every file and directory in any directory beginning with "T", "P", "A" or "M" in the current directory (except any file or directory beginning with . (dot) in exactly the directory beginning with "T", "P", "A" or "M" in the current directory) to have a permission of rwxr-----.

Code:
$ mkdir Tx Px Ax Mx              

$ touch Tx/.T1 Px/P1 Ax/.Ax Mx/Mx

$ find . -ls
2138774        0 drwxr-xr-x    6 scott            staff                 204 Sep 23 20:48 .
2139783        0 drwxr-xr-x    3 scott            staff                 102 Sep 23 20:48 ./Ax
2139820        0 -rw-r--r--    1 scott            staff                   0 Sep 23 20:48 ./Ax/.Ax
2139784        0 drwxr-xr-x    3 scott            staff                 102 Sep 23 20:48 ./Mx
2139821        0 -rw-r--r--    1 scott            staff                   0 Sep 23 20:48 ./Mx/Mx
2139782        0 drwxr-xr-x    3 scott            staff                 102 Sep 23 20:48 ./Px
2139819        0 -rw-r--r--    1 scott            staff                   0 Sep 23 20:48 ./Px/P1
2139781        0 drwxr-xr-x    3 scott            staff                 102 Sep 23 20:48 ./Tx
2139818        0 -rw-r--r--    1 scott            staff                   0 Sep 23 20:48 ./Tx/.T1

$ chmod -R 740 [TPAM]*/*

$ find . -ls            
2138774        0 drwxr-xr-x    6 scott            staff                 204 Sep 23 20:48 .
2139783        0 drwxr-xr-x    3 scott            staff                 102 Sep 23 20:48 ./Ax
2139820        0 -rw-r--r--    1 scott            staff                   0 Sep 23 20:48 ./Ax/.Ax
2139784        0 drwxr-xr-x    3 scott            staff                 102 Sep 23 20:48 ./Mx
2139821        0 -rwxr-----    1 scott            staff                   0 Sep 23 20:48 ./Mx/Mx
2139782        0 drwxr-xr-x    3 scott            staff                 102 Sep 23 20:48 ./Px
2139819        0 -rwxr-----    1 scott            staff                   0 Sep 23 20:48 ./Px/P1
2139781        0 drwxr-xr-x    3 scott            staff                 102 Sep 23 20:48 ./Tx
2139818        0 -rw-r--r--    1 scott            staff                   0 Sep 23 20:48 ./Tx/.T1

# 7  
Old 09-23-2013
Thank you Scott, I understand that now. But how will I automate everything in my script?
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