Please post command output Assignment 3 Text File Utilities

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Assignment 3: Text File Utilities

The purpose of this lab is to become familiar using Unix\'s utilities for manipulating text files.
As a preliminary to this project make sure you have a copy of famous.dat. Be sure to submit each command as well as the results of each command.

Task A: Make a one-line Unix command - using pipe(s) - to display the number of files in your home directory including the hidden files that begin with \'.\'
Note: Output will be the number of files you have in your directory

Task B: Make a one-line Unix command - using pipe(s) - to display the number of unique zip codes in famous.dat (hint: use -u on sort).

Note: Output will be the number:
33

Task C: Using the fixed length field file called famous.dat, make a one-line Unix command - using pipe(s) - to display an alphabetical list of the last and first names in upper case of the last 8 people in the file. Hint: Names are in columns 6 through 35. Output is this..

DARWIN         CHARLES      
EINSTEIN       ALBERT       
GALILEO        GALILELI     
GOLDMAN        EMMA         
LOVELACE       ADA          
MANDELA        NELSON       
PARKS          ROSA         
RUSSELL        BERTRAND

Task D: Using the fixed length field file called famous.dat, make a one-line Unix command - using pipe(s) - to display a list of last name, first name and zip only. Sort first on the zip code, then on last name when there are duplicate zip codes. To save on amount of output produced, just display the first 15 lines of the output from the above, as the last command in the pipe. Hint: zip codes are in columns 44 through 48.

Note: Here is what the output should look like:

moose          bullwinkle     94111
franti         michael        94112
marley         bob            94112
richards       keith          94112
simone         nina           94112
einstein       albert         94113
russell        bertrand       94113
oliver         mary           94114
hanh           thichNhat      94115
kropotkin      peter          94115
chomsky        noam           94116
squirrel       rocketJ        94122
chapman        tracy          94211
marley         rita           94212
black          mary           94221

Task E: Write a one-line Unix command using pipes, to display just the current day of the week in lower case (i.e. mon). Hint: Cut the first part of the date command then pipe to tr.
Note: Example for output would be
wed
if I run the command on a Wednesday

famous.dat file

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Solution

Task A

$ find -maxdepth 1 -type f | wc -l
134

Task B

$ awk \'/ / {print $7}\' famous.dat | sort | uniq|wc -l
33

Task C

$ tail -n 8 famous.dat | awk -F \" \" \'{ print toupper($3)\" \"toupper($4)}\' | sort
DARWIN CHARLES
EINSTEIN ALBERT
GALILEO GALILELI
GOLDMAN EMMA
LOVELACE ADA
MANDELA NELSON
PARKS ROSA
RUSSELL BERTRAND

Task D

$ awk \'/ / { print $3\" \"$4\" \"$7}\' famous.dat | sort -k3 -k1 | head -n 15
moose bullwinkle 94111
franti michael 94112
marley bob 94112
richards keith 94112
simone nina 94112
einstein albert 94113
russell bertrand 94113
oliver mary 94114
hanh thichNhat 94115
kropotkin peter 94115
chomsky noam 94116
squirrel rocketJ 94122
chapman tracy 94211
marley rita 94212
black mary 94221

Task E

$ date | awk -F \" \" \'{print tolower($1)}\'
wed