Programming Excersises A
Step 1
Write the command to download the text file with the following URL to
your computer with the filename “frost.txt”.
Here’s the URL: http://rwet.decontextualize.com/texts/frost.txt
curl http://rwet.decontextualize.com/texts/frost.txt > frost.txt
Step 1a
Verify step 1 by typing the following command:
$ cat <frost.txt
Step 2
Write a command that displays the only the lines from frost.txt
that contain the string “And”.
grep And <frost.txt
Step 3
Using a pipe, write a command that extracts the second word from
each of the lines you displayed in Step 3.
grep And <frost.txt | cut -d” ” -f 2
Step 4
Add one more element to the pipe in step 3, so that the words are
displayed in alphabetical order.
grep And <frost.txt | cut -d” ” -f 2 | sort
Step 5
We didn’t talk about “fold” in class, but it’s a useful command for
word-wrapping text. Investigate the “fold” command with “man” (type “man fold”) and write a command below to word-wrap “frost.txt” at 20 characters, keeping word boundaries intact.
fold -w 20 -s frost.txt