Linuxzoo Pipes Questions: Write the commands that will execute the following

Question 6: using grep

Use grep on /usr/share/dict/words to find the first word that contains the three letter sequence wta

Question 7: count with grep

Use grep piped through wc on file /usr/share/dict/words to find the number of words that contain the letter x.

Question 8: negative grep

Use grep to find all lines in /etc/passwd that do not have nologin one the line. Make grep include the line numbers of the matching lines and send the output to file s5

Question 9: grep and ls

Use ls -l and grep to find all the files in the directory /etc that were last modified in August (hint: try looking for the case sensitive string "Aug"). Send this list to s6.

Question 10: ls grep and sort

Use ls -l and grep and sort to find all the files in /etc that were last modified in Jun. Sort this list in descending order of size and then alphabetically by name (so 2 files with the same size will appear in alphabetic order). Send the output to s7. Sorting using other techniques will probably not get the same answer...