Help with a question i have attempted to figure out


 
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Old 03-05-2007
Help with a question i have attempted to figure out

Thought i should start this has a new thread.

i am stuck on the following question, but after learning more unix, i have written an answer to it. Can anyone check to see if it is correct and what improvements need to be made?

Question:

Write a pipeline that updates the content of a file (a file of your choice) by replacing all matches of the word ‘and' with the symbol ‘&' and by replacing the end of each line with the user login name. If the command completes successfully it should print ‘YES', otherwise it should print ‘NO'.

Answer:

cat text.txt | sed -e s/and/$USER/g -e s/$/”&”/g | cat -> text.txt
&& echo yes || echo no

thanks
 
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PURITY-NG(6)							   Games Manual 						      PURITY-NG(6)

NAME
purity-ng - general purpose purity testing software SYNOPSIS
purity-ng [OPTION]... list|FILE|TESTNAME DESCRIPTION
Purity is an interactive purity test program with a simple, user interface and datafile format. For each test, questions are printed to the your terminal, and you are prompted for an answer to the current question. At a prompt, these are your choices: y Answer "yes" to the question. n Answer "no" to the question. b Backup one question, if you answered it incorrectly, or someone is watching you take the test, and you don't (or do) want to admit a different answer. s Print your current score on the test you are taking. q Quit the test, and print the current score. ? Print a help screen for the current prompt. At the end of the test, your score is printed out. For most purity tests, lower scores denote more "experience" of the test material. OPTIONS
--version print current version of purity-ng -h, --help show the help message and exit -p print the test without prompting for answers. -r decrypt the test using the Rot 13 algorithm. To get a list of all purity tests available globally on your system, run purity-ng list. AUTHORS
purity was originally written by Eric Lechner in 1989. purity-ng is a reimplementation of purity in Python for modern systems, written by Simon Fondrie-Teitler and Luke Faraone. This manual page was written by Luke Faraone. BUGS
If you find bugs in the application, please report these to <https://bugs.launchpad.net/purity-ng> or to your distribution's distributor. SEE ALSO
purity(6) Running purity-ng format provides documentation about the datafile format. Additional documentation is available online at <http://packages.python.org/purity-ng>. January 7, 2011 PURITY-NG(6)