How to Create a Bash Script for Mass Changes

Step-by-Step Guide

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   Step 1: Collect the data that is needed to be changed.

   Here we will use the "find" command to look for 777 directories under user "whomever." find /home/whomever/public_html
   -type d
   -perm 777 This finds any directories (-type d) in directory /home/whomever/public_html that are 777 permissions (-perm 777).
   
   You can change this to work with whatever directories you want, permissions you want, etc.
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   Step 2: Alright that's neat

   Let's make them all go into a file.
   
   Start with the same command, but we'll add something to make it go into a file we create. find /home/whomever/public_html
   -type d
   -perm 777 > badpermlist What this does is take our query and creates a file called "badpermlist" where all the data will be put. ,, IMPORTANT: the ` ` marks are the ones that are under the ~ key, NOT the apostrophe key. ,, for each in `cat badpermlist`     press
   -enter- do                                         press
   -enter- ll
   -d $each                              press
   -enter- done | more                            press
   -enter- Now all the data that showed up as 777 should now show as
   755. , I hope this helps breakdown some basic concepts for you and helps you on your scripting way!
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   Step 3: but kind of hard to read if you have a lot of 777 permissions in this directory.

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   Step 4: Now that we have our data

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   Step 5: we can start with some basic scripting.

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   Step 6: Verify your data for each in `cat badpermlist`     press -enter- do                                         press -enter- ll -d $each                              press -enter- done | more                            press -enter This will show your data that is in the file.

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   Step 7: Change the data for each in `cat badpermlist`     press -enter- do                                         press -enter- chmod 755 $each                   press -enter- done                                     press -enter- Congratulations

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   Step 8: you just changed all those pesky 777 permissions to 755 like they should be.

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   Step 9: Verify that the change took place because it is never a bad idea to check your work.

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    Step 10: Now as you can tell

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    Step 11: there is a lot of potential to a very simple script like this.

Detailed Guide

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