Question: 1. After the following code executes, what elements will be members of set3? set1 = set(['d', 'e', 'f']) set2 = set(['a', 'b', 'c', 'd', 'e'])
1.
After the following code executes, what elements will be members of set3?
set1 = set(['d', 'e', 'f'])
set2 = set(['a', 'b', 'c', 'd', 'e'])
set3 = set2.difference(set1)
2.
After the following code executes, what elements will be members of set3?
set1 = set(['d', 'e', 'f'])
set2 = set(['a', 'b', 'c', 'd', 'e'])
set3 = set1.difference(set2)
3.
Which of the below logical comparisons can be performed using test condition in shell scripting?
| a. | Numeric comparison | |
| b. | String comparison | |
| c. | Both a and b | |
| d. | None of the above |
4.
What is the output of the following code:
os = Unix
echo 1.$os 2."$os" 3.'$os' 4.$os
| a. | 1.Unix 2.Unix 3.Unix 4.Unix | |
| b. | 1.Unix 2.Unix 3.$os 4.Unix | |
| c. | 1.Unix 2.Unix 3.Unix 4.$os | |
| d. | 1.Unix 2.$os 3.$os 4.$os |
5.
Any command surrounded by backquote is executed by shell and its output is inserted in the place it was found. This is known as
| a. | Command replacement | |
| b. | Parsing | |
| c. | Command substitution | |
| d. | Command execution |
6.
The first line of a shell program beginning with #! is called
| a. | interpreter line | |
| b. | hash-bang line | |
| c. | she-bang line | |
| d. | All the above |
7.
If a script is run as foo -l -t test[1-3], what is the value of $*, given that the files test1, test2 and test3 exist?
| a. | -l -t bar1 bar2 bar3 | |
| b. | -l -t | |
| c. | bar1 bar2 bar3 | |
| d. | None of the above |
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