lesson04_solutions.txt

1.
nano folder/file1.txt

2.
wc -l letters/letter1.txt

3.
grep you letters/letter?.txt

4.
cat folder/subfolder/file8.txt
sort folder/subfolder/file8.txt
sort -u folder/subfolder/file8.txt OR sort folder/subfolder/file8.txt | uniq

5.
jq '.[].name' folder/subfolder/file11.json

6.
sed 's/type/animal/' -i folder/subfolder/file11.json