Find command Evaluate your find command comprehension by completing the following tasks: In your ~/workspace directory: Find - with a max directory depth of 1 - only the files that begin with the letter h and redirect the output to a ~/workspace/project-log/files-with- h. txt file Enter the ~/workspace/project-log directory and find all the files ending with the .txt pattern in the current directory

Aletter or menu command that starts an action when the user presses the designated letter and the alt key together is called what?

Suppose there is a relation r(a, b, c) with a b+-tree index with search keys (a, b).1. what is the worst-case cost of finding records satisfying 10 < a < 50 using this index, in terms of the number of records n1, retrieved and the height h of the tree? 2. what is the worst-case cost of finding records satisfying 10 < a < 50 and 5 < b < 10 using this index, in terms of the number of records n2 that satisfy this selection, as well as n1 and h defined above? 3. under what conditions on n1 and n2, would the index be an efficient way of finding records satisfying the condition from part (2)?

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