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wc -w Random.txt
4. Output lines consisting the words starting with ‘se’
grep ‘<se’ Random.txt
5. Output list of unique words in the file random.txt
cat Random.txt | tr ' ' 'n' | sort | uniq -u
6. Output list of unique words with frequency counts
cat Random.txt | tr ' ' 'n' | sort | uniq -c
7. Output the first two lines consisting the words ending in ‘ing’
grep ‘ing>’ Random.txt | head -2
8. Output the count of words with 2 or more vowels
grep -o ‘<[^ ]*[aeiou][^ ]*[aeiou][^ ]*>’ Random.txt | wc -w
9. Output the words that end in “ling” using sorting (and not using grep)
10. Output the lines with three or more vowels
grep -i ‘<[^ ]*[aeiou][^ ]*[aeiou][^ ]*[aeiou][^ ]*>’ Random.txt
11. Command to find MAC addresses
grep -i -o '[0-9A-F]{2}(:[0-9A-F]{2}){5}' Random.txt
12. Command to find Email addresses
grep -E -o ‘b[a-zA-Z0-9.-]+@[a-zA-Z0-9.-]+.[a-zA-Z0-9.-]+b’ Random.txt
13. Command to find phone numbers with format XXX-XXX-XXXX
grep -o ‘[[:digit:]]{3}-[[:digit:]]{3}-[[:digit:]]{4}’ Random.txt
14. Command to find IPv6 addresses (this is a complex regex since ipv6 representations can be compressed. You can assume the default format and build the regex.) Note: Bonus points for a full proof regex able to filter compressed Ipv6 addresses.
grep -E -o ‘([0-9a-fA-F]{0,4}:){4,7}[0-9a-fA-F]{4}’ Random.txt
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