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Homework and Emergencies Homework & Coursework Questions Grep commands: need some practice help please Post 302998606 by asaint on Monday 5th of June 2017 12:31:54 AM
Old 06-05-2017
Grep commands: need some practice help please

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!

1. The problem statement, all variables and given/known data:
Use the less command to view the words file.
To see the results of a grep that returns many rows, pipe the output of the grep into less. For example, grep ‘the' words | less

You can pipe the output of a grep command into wc -l to count lines instead of displaying them.
How many words in this file begin with the letter x?
How many words in this file begin with the letter z?
How many words in this file begin with the letter x or z?

find or count the words in dictionary that:
end in ing (such as counting)
include ing but not at the end (such as ringing)
begin with a capital letter
contain only two letters, the first is lower case, the second uppercase (such as kW)
contain only the letters in simon in any order (such as osmosis)
begin with a vowel (aeiou)
do not contain a vowel (such as rhythm)
contain four consecutive vowels (such as queue)
are there any words with 5 consecutive vowels?
can be spelled using the 7 hex letters (such as faced)
contain all five vowels in the correct order a,e,i,o,u




2. Relevant commands, code, scripts, algorithms:
grep, less,pipes,egrep


3. The attempts at a solution (include all code and scripts):


not sure how to do any of these



4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):
UCOL Palmerston North, New zealand, Simon Burt, T111

Note: Without school/professor/course information, you will be banned if you post here! You must complete the entire template (not just parts of it).
 

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LOOK(1) 						      General Commands Manual							   LOOK(1)

NAME
look - find lines in a sorted list SYNOPSIS
look [ -dfnixtc ] [ string ] [ file ] DESCRIPTION
Look consults a sorted file and prints all lines that begin with string. It uses binary search. The following options are recognized. Options dfnt affect comparisons as in sort(1). -i Interactive. There is no string argument; instead look takes lines from the standard input as strings to be looked up. -x Exact. Print only lines of the file whose key matches string exactly. -d `Directory' order: only letters, digits, tabs and blanks participate in comparisons. -f Fold. Upper case letters compare equal to lower case. -n Numeric comparison with initial string of digits, optional minus sign, and optional decimal point. -t[c] Character c terminates the sort key in the file. By default, tab terminates the key. If c is missing the entire line comprises the key. If no file is specified, /lib/words is assumed, with collating sequence df. FILES
/lib/words SOURCE
/src/cmd/look.c SEE ALSO
sort(1), grep(1) DIAGNOSTICS
The exit status is ``not found'' if no match is found, and ``no dictionary'' if file or the default dictionary cannot be opened. LOOK(1)
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