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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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FOO(1)								     Commands								    FOO(1)

NAME
wordplay - anagram finder SYNOPSIS
wordplay string [-slxavnmd] [-w word] [-f wordfile] DESCRIPTION
wordplay is an anagram finder. What is an anagram? Well, let's turn to Merriam-Webster's Collegiate Dictionary, Tenth Edition: anagram: a word or phrase made by transposing the letters of another word or phrase. Each letter in the anagram must appear with the same frequency as in the original string. For example, the letters in the word "stop" can be rearranged to spell "tops" or "pots" or "sotp". "sotp" is not a word and is not of interest when generating anagrams. "stop" has four letters, so there are 24 ways to rearrange its letters. However, very few of the re- arrangements actually spell words. Wordplay, by using a list of words, takes a specified string of letters and uses the list of words to find anagrams of the string. By the way, "Wordplay" anagrams to "Rowdy Pal", and the program really can live up to that particular anagram. I have been able to come up with anagrams of most of my coworkers' names that are humorous, descriptive, satirical, or, occasionally, quite vulgar. OPTIONS
string String to be anagrammed. This should be seen to the program as a single argument. If you feel you must put spaces in the string, under UNIX, you will have to put backslashes in front of the spaces or just put the entire string in double quotes. Just leave the spaces out because the program throws them out anyway. -s Silent operation. If this option is used, the header and line numbers are not printed. This is useful if you want the output to contain only the anagrams. Use this option with the l (and x) option to generate a wordlist which can be piped or redirected. This option does not suppress error messages that are printed to stderr. Finding zero anagrams is not an error. -l Print list of candidate words before anagramming. This is the list of words that can be spelled with the letters from the specified string, with no letters being used more often that they appear in the input string. -x Do not perform anagramming. Use with l if you just want the candidate word list without anagrams. -a Allow anagrams containing two or more occurrences of a word. -v Consider strings with no vowels as candidate words and do not give up when there are no vowels remaining after extractions. -m Limit candidate word length to a maximum number of letters. Follow by an integer. m12 means limit words to 12 letters. m5 means limit them to 5 letters. -n Limit candidate word length to a minimum number of letters. Follow by an integer. n2 means limit words to 2 letters. n11 means limit them to 11 letters. -d Limit number of words in anagrams to a maximum number. Follow by an integer. d3 means no anagrams should contain more than 3 words. d12 means limit anagrams to 12 words. This is currently the option that I recommend to limit output, since an optimization has been added to speed execution in some cases when this option is used. -w Specify a word which should appear in all anagrams. This is useful if you already have a word in mind that you want in the ana- grams. This option should be specified at the end of the command, followed by a space and the word to use. -f Specify which word list to use. See example! This option should be specified at the end of the command, followed by a space and the alternate wordfile name. This is useful if you have other word lists to try or if you are interested in making your own custom- ized word list. New feature: Use a hyphen as the filename if the wordlist should be read from stdin. EXAMPLES
wordplay persiangulf Anagram the string "persiangulf" . wordplay anagramming -lx Print the list of words from the wordlist that can be spelled by using the letters from the word "anagramming". A letter may not be used more often than the number of times it occurs in the word "anagramming". No anagrams are generated. wordplay tomservocrow -n3m8 Anagram the string "tomservocrow" . Do not use words shorter than 3 letters or longer than 8 letters. wordplay persiangulf -ld3m10 -f /usr/share/dict/words Print the candidate words for the string "persiangulf". Print anagrams containing up to 3 words, without considering any words longer than 10 characters. Use the file "/usr/share/dict/words" rather than "words721.txt". wordplay soylentgreen -n3w stolen -f w2 Print anagrams of "soylentgreen" containing the word "stolen" and use the file "w2" as the wordlist file. Discard candidate words shorter than 3 characters. wordplay university -slx Print the candidate word list for the string "university". The output will consist of just the words. This output is more useful for redirecting to a file or for piping to another program. wordplay trymeout -s Anagram the string "trymeout" and print the anagrams with no line numbers. The header will not be printed. This is useful for pip- ing the output to another process (or saving it to a file to be used by another program) without having to parse the output to remove the numbers and header. wordplay trymeout -v Anagram "trymeout" as usual, but in case vowel-free strings are in the wordlist, consider them as possible candidate words. cat wordlist1 wordlist2 wordlist3 | sort -u | wordplay trymeout -f - Anagram "trymeout" and read the wordlist from stdin, so that, in this case, the three wordlists "wordlist1", "wordlist2", and "wordlist3" will be concatenated and piped into wordplay as the wordlist. The "sort -u" is there to remove duplicate words from the combined wordlist. NOTES
If the option specifiers are combined, as in "an7m7d5f" or "d3n5f", the f should come last, followed by a space and the word list file. The "w" option is used in the same manner. Limit the number of words to consider, if desired, using the n and m options, or better yet, use the d option to limit depth, when anagram- ming certain time-consuming strings. The program is currently optimized to speed execution in some cases when the d option is used. It is highly recommended that the "words721.txt" file distributed with the program be used, since many nonsense two and three-letter combi- nations that are not words have been eliminated. This makes the quality of the output slightly better and speeds execution of the program a slight bit. Any word list may be used, as long as there is one word per line. Feel free to create your own custom word list and use it instead. The word list does not have to be sorted in any particular way. FILES
/usr/share/games/wordplay/words721.txt Default word list file. DISTRIBUTION
This program was written for fun and is free. Distribute it as you please, but please distribute the entire package, with the original words721.txt and the readme file. If you modify the code, please mention my name in it as the original author. Please send me a copy of improvements you make, because I may include them in a future version. AUTHOR
Wordplay was written by Evans A Criswell <criswell@cs.uah.edu> This man page was written by Joey Hess <joeyh@debian.org> DECEMBER 1996 FOO(1)
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