linux 問題

請問有冇高手懂以下問題怎樣做 ?  十萬分感謝!!

Write a shell script (which is equivalent to batch file in DOS) to find the
difference between two installations
Given the ‘install.log’ of many groups, write a shell script that can find the difference between any two.
The following commands/features are used in my shell script – missing_packages_F9.sh:
 #!/bin/bash (1st line)
 LANG=en_US (2nd line)
 cat
 cut
 diff
 echo
 grep
 rm
 sort
 wc
 $1, $2 (positional parameters)
 > (output redirection)
 | (pipeline)
 ` ` (backticks)
References:
 ‘man’ the commands
 Search information of the commands

Two runs of my script are shown for your reference.

[ 本帖最後由 yu7411 於 2008-12-14 22:38 編輯 ]