Text tools

Questions 1 to 5 of 8

1. 1. What does this print? ``bash echo 'v1.2 and v1x2' | sed -E 's/v1.2/OK/g' ``

   v1.2 and v1x2OK and v1x2OK and OKv1x2 and OK
2. 2. The file laugh.txt has four lines: ha, haha, hahaha and hi. What does this print? ``bash grep -E '^(ha){2,3}$' laugh.txt ``

   ha, haha and hahahahaha and hahahaha and hahahahaha only
3. 3. What does this print? Note the two spaces after the address. ``bash printf '%s\n' '10.0.0.5 GET /home 200' | cut -d' ' -f3 ``

   GET/home200an empty line
4. 4. Match each command to the job it does in this lesson.

   Choose the matching item for each row.

   cut -d, -f2Choose…print only the lines whose fourth column is 500 or morekeep a quoted comma inside one field instead of splitting itcount how many lines in a sorted list are the samepick the second column of a comma file, with no arithmeticawk '$4 >= 500'Choose…print only the lines whose fourth column is 500 or morekeep a quoted comma inside one field instead of splitting itcount how many lines in a sorted list are the samepick the second column of a comma file, with no arithmeticgawk --csvChoose…print only the lines whose fourth column is 500 or morekeep a quoted comma inside one field instead of splitting itcount how many lines in a sorted list are the samepick the second column of a comma file, with no arithmeticuniq -cChoose…print only the lines whose fourth column is 500 or morekeep a quoted comma inside one field instead of splitting itcount how many lines in a sorted list are the samepick the second column of a comma file, with no arithmetic
5. 5. Match each grep or sed option to what it does.

   Choose the matching item for each row.

   grep -oChoose…print how many lines match, not the lines themselveschange every match on each line, not only the firstchange the file itself and keep the original as a .bak copyprint only the matched text, not the whole linegrep -cChoose…print how many lines match, not the lines themselveschange every match on each line, not only the firstchange the file itself and keep the original as a .bak copyprint only the matched text, not the whole linesed -i.bakChoose…print how many lines match, not the lines themselveschange every match on each line, not only the firstchange the file itself and keep the original as a .bak copyprint only the matched text, not the whole linesed 's/cat/bird/g'Choose…print how many lines match, not the lines themselveschange every match on each line, not only the firstchange the file itself and keep the original as a .bak copyprint only the matched text, not the whole line