31) Which of the following is a correct syntax for performing substitution on a file?
:address/source_pattern/target_pattern/flag![]()
:address/target_pattern source_pattern/flag![]()
:address/flag![]()
:address![]()
Answer : A Discuss
32) Which of the following commands can be used to replace ‘professor’ with ‘director’ throughout the whole file?
1,$s/professor/director/g![]()
%s/professor/director/g![]()
1,$s/professor/director![]()
1,$s/professor/director/g and %s/professor/director/g![]()
Answer : D Discuss
33) Which of the following flag will be used for interactive substitution?
34) Which one of the following commands will be used to delete all the instances of string ‘manager’ in file003?
35) On a UNIX system, there can be ____ shells running simultaneously.
36) On a UNIX system, there can be ____ shells running simultaneously .
37) The prompt issued by the shell is called ___
38) In UNIX there are ___ major types of shells.
39) What is the default symbol for command prompt in Bourne shell?
40) What is the default symbol for command prompt in C shell?