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Given a text file input, what program will change it to the following
The input has the '/' character and has no space (blank) character in
1. add "%dir /usr/hw/" to lines not ending in 'L', 'H', 'I', 'L' or
2. add "%attr(0444,root,root) /usr/hw/" to lines ending in 'L', 'H',
'I' or 'L'.
3. add "%attr(0544,root,root) /usr/hw/" to lines ending in 'S'.
4. add "mkdir -p " to the "longest" unique path of the output of rule
For homework questions, you will need to provide what you have tried and what in particular is tripping you up. Don't expect us to do your homeword for you. That would be cheating. The only help at this stage is an RTFM answer. See the sed or awk manpages. You may have not even have read the material you should have to not have a clue how to procede.