ECS30
Linux
Assignment 3
Chengeng Xiao
SID: 913186040
1, (5 points) How do you determine who is logged into the CSIF system you are using?
Enter command : “users”
2，(7 points) Write a UNIX/Linux command to print dictionary words that contain the vowels ‘a’, ‘e’, ‘i’, ‘o’, and ‘u’ in that order. The vowels may be upper-case or lower-case. Hint: The file “/usr/share/dict/words” is a dictionary of English words. The command grep(1) may help you.
First go to folder /usr/share/dict find words file. Then enter:
grep -E “^[^aeiouAEIOU]*[a|A][^aeiouAEIOU]*[e|E][^aeiouAEIOU]*[i|I][^aeiouAEIOU]*[o|O][^aeiouAEIOU]*[u|U].*” words
3, (5 points) What is the file “/etc/motd”? When are its contents displayed?
It displays CSIF’s information.
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