Einstein - simple Shell scripts

Scripts must use the names below.
(The names may be clues!)

1. ls2.sh
   • List files ending in ".txt" in current directory. Long format.

2. ls4.sh
   • List files ending in "html" in all sub-directories of current directory.

3. ls5.sh
   • List files beginning with "act1" in all sub-directories of current directory and sort them by size.

4. alldir.sh
   • List all directories underneath /etc
   • Use "find".

5. grep2.sh
   • Write a script to search for a string in a file.
   • The string is "queen" in lower case.
   • The file is the play Macbeth:

      /users/tutors/mhumphrysdculab/share/shakespeare/macbeth/complete.html 

   • First, test it locally. There should be 4 hits.
   • Once you are happy it is working, change the filename to

      macbeth.htm 

     (with no directory in front of it) and upload it.
   I made an error with this one.
   The /users/tutors filesystem is not addressable in lab exam mode. Shakespeare does not exist.
   So we re-phrase the question as:

   • Write a script to search for a string in a file.
   • The string is "queen" in lower case.
   • The file is

      macbeth.htm 

     (with no directory in front of it).

6. grep3.sh
   • Same as above except script is to print lines containing "queen", ignoring case.