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This MCQ-formatted quiz covers awk command operations and Perl as a general-purpose tool.
Awk filter operates at the field level. True or false?
True
False
Which of the following will be used to print lines containing ‘manager’ in emp.lst?
awk ‘/manager/ { print }’ emp.lst
awk ‘/manager { print }’ emp.lst
awk ‘/manager/ { print } emp.lst
awk ‘manager { print }’ emp.lst
Awk uses __ for splitting a line into fields.
Special Parameters
Shell Variables
Environmental Variables
Command Arguments
Which built-in variable is used by the awk command to specify line numbers?
AR
NR
$$
$?
What is the default delimiter used by the awk command?
Tab
Whitespace
Double Space
|
The printf function uses __ for string data and __ for numeric data.
%f, %l
%s, %f
%s, %d
%s, %s
A user-defined variable is initialized to
Zero
Zero or Null String
Null
Operator
Which commands is used to assign executable permission to all of the files named “letter“?
Chmod ugo+r letter
Chmod ugo+rw letter
Chmod u+x letter
Chmod ugo+x letter
None of the above
Which of the following commands is used to list the contents of directories?
Is
Ip
Dir
Tar
None of the above
Which command is used to count just the number of characters in a file?
wc - 1
wc -c
wc -w
wc -r
None of the above
Which command is used to remove the read permission of the file ‘note‘ from both the group and others?
chmod go+r note
chmod go+rw note
chmod go-x note
chmod go-r note
None of the above
Which of the following commands is used to assign executable permission to the file owner named ‘note‘?
Chmod g+x note
Chmod u+w note
Chmod u+x note
Chmod ugo+x note
None of the above
Which filter, apart from Perl, is the most powerful?
Sed
Awk
Grep
Cut
If the selection_criteria is missing in the awk command statement, then the default action is
Split
Print and Split
No default action
For pattern-matching, awk uses regular expressions in __ style.
SED
GREP
PERL
