4820 p1 milestone 2 memory check
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Milestone 2
Memory leaks and undefined behaviors are tested here but not counted into grade.
Hint: LeakSanitizer
is unstable. You may ignore the cases when it meets fatal error.
Tasks
6. Pipes: [5+5+5+10]
6.1 Basic pipe support (e.g. echo 123 | grep 1); [5]
- Case: 1-2
6.2 Run all ‘stages’ of piped process in parallel. (e.g. yes ve482 | grep 482); [5]
- Case: 3-4
- Your shell is likely to get TLE (Time Limit Exceeded) if not running in parallel.
7. Support CTRL-D (similar to bash, when there is no/an unfinished command); [5]
- Case: 5-6
8. Internal commands: [5+5+5]
8.1. Implement pwd as a built-in command; [5]
- Case: 7
8.2 Allow changing working directory using cd; [5]
- Case: 8
8.3. Allow pwd to be piped or redirected as specified in requirement 4.; [5]
- Case: 9-10
- eg. pwd > 1.txt
9. Support CTRL-C: [5+3+2+10]
- Your shell is likely to get TLE (Time Limit Exceeded) if CTRL-C is not handled correctly.
- You should NOT use kill(0, signal), it may destroy the judger. You will be sent to the honor council if you intentionally use it.
9.1. Properly handle CTRL-C in the case of requirement 4.; [5]
- Case: 11
9.3. Extend 9.2 to support requirement 7., especially on an incomplete input; [2]
- Case: 12
4820 p1 milestone 3
- Status
- Finished
- Problems
- 6
- Open Since
- 2022-09-19 00:00
- DDL
- 2022-10-16 23:59
- Extension
- 72.0 hour(s)