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Full Discussion: grep problem with the ^ symbol, help needed please.
Top Forums UNIX for Dummies Questions & Answers grep problem with the ^ symbol, help needed please. Post 302180466 by vino on Monday 31st of March 2008 09:44:28 AM
Old 03-31-2008
Quote:
Originally Posted by Gvsumrb
Hello I am new to this forum and have been perplexed by this issue for the last hour of my life, I've tried to search everywhere for a solution to my syntax error, but here is my code.

grep -wvnf 'noise.dat' sample.out | sort

output:
4:Java Swing
5:Swing Java
6:Software Requirements Analysis
7:Requirements Analysis Software
8:Analysis Software Requirements

my desired ouput should be

1 Analysis Software Requirements
2 Filters Pipes and
3 Java Swing
4 Pipes and Filters
5 Requirements Analysis Software
6 Software Requirements Analysis
7 Swing Java

with the line "and Filters Pipes" omitted.

I have tried doing grep -wvnf '^noise.dat' sample.out | sort

with the ^ symbol in there but i get the "grep: ^noise.dat: No such file or directory" with so many different variations, but I just cannot figure it out.

Any help would be greatly appreciated, I have spent so much time on this, and yes I do know I am noob, but my professor for this class is horrible.
It is against the rules of the forum to post homework questions. I shall try only to guide you in the right direction. No direct solutions.

What are the contents of sample.out and noise.dat ? Also "^" is used when you are using a string and not when using an input file.
 

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LEARN ABOUT LINUX

dacs.java

DACS.JAVA(7)						  DACS Miscellaneous Information					      DACS.JAVA(7)

NAME

       dacs.java - DACS Java support

DESCRIPTION

       This document describes support for Java provided by DACS.

       To enable Java support, DACS must be configured using the --enable-java flag. It may also be necessary to specify the location of the Java
       commands and include files. See dacs.install(7)[1].

	   Note
	   Java support is currently very limited and should be considered experimental. It is currently only possible to call dacsauth(1)[2] and
	   dacscheck(1)[3] using the Java Native Interface (JNI) provided. The command line arguments to both of these commands are exactly as
	   documented in their manual pages. Each argument is passed as a String.

	   The code is not thread-safe and is probably not suitable for being called many times within a particular process due to assumptions it
	   makes about dynamic memory allocation.

	   There are no immediate plans to improve or extend Java support. Using the existing capability to build the JNI layer, however, it
	   should not be difficult for an experienced Java programmer to build upon the example Java code provided.

       With Java support enabled, building DACS will copy the JNI shared library and a .jar file to the library directory (default:
       /usr/local/dacs/lib), and the JNI include files to the include directory (default: /usr/local/dacs/include).

       The tools/java/jni distribution directory contains a simple script called javarun that demonstrates how to run dacsauth or dacscheck as a
       Java application. For example, to validate the Unix password for user somebody, run (as root):

	   ./javarun dacsauth -m unix suff -user somebody -prompt

DIAGNOSTICS

       The return codes are as documented in the command's manual page.

AUTHOR

       Distributed Systems Software (www.dss.ca[4])

COPYING

       Copyright2003-2012 Distributed Systems Software. See the LICENSE[5] file that accompanies the distribution for licensing information.

NOTES

	1. dacs.install(7)
	   http://dacs.dss.ca/man/dacs.install.7.html

	2. dacsauth(1)
	   http://dacs.dss.ca/man/dacsauth.1.html

	3. dacscheck(1)
	   http://dacs.dss.ca/man/dacscheck.1.html

	4. www.dss.ca
	   http://www.dss.ca

	5. LICENSE
	   http://dacs.dss.ca/man/../misc/LICENSE

DACS 1.4.27b							    10/22/2012							      DACS.JAVA(7)
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