help with shell script

[Philip Hallstrom]

> Hi.  I am writing up a doc for the fbsd community that covers usage of 
> ports.  I have two commands that allow me to assertain the amount of 
> disk space being utilized by currently installed ports.  I would like to 
> make a shell script (bourne or bash) out of them but I am not sure how.
>
> 1. This gives me the amount of space (kB) taken up by the 10 largest ports:
>
> $ pkg_info -as | grep ^[0-9] | sort -gr | head -10 | cut -c 1-6
>
> 2. Using one figure from above list I produce the details of the corresponding port:
>
> $ pkg_info -as | grep -B3 240695
>
> Output:
> ------------------------------------------------------
> Information for linux_base-8-8.0_6:
>
> Package Size:
> 240695  (1K-blocks)
> ------------------------------------------------------
>
> I would like the output of the script to be the above but for all ten ports (~40 lines; insert
> a blank line between each?).  I know I need some sort of iteration but I am rusty on scripting.
> Can anyone help?

This should get you close... if you want only the top 10 just add more 
pipes to the end with sort and head...

----------------------------------------------------
#!/bin/sh

newline='\
'

pkg_info -as | \
         tr '\n' ' ' | \
         sed -e 's/Package Size://g' \
                 -e "s/(1K-blocks)/$newline/g" |\
         sed -e 's/^  *Information for //'
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