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Full Discussion: Help with Comparing 2 strings from text
Top Forums Shell Programming and Scripting Help with Comparing 2 strings from text Post 302541289 by h@foorsa.biz on Saturday 23rd of July 2011 01:42:31 PM
Old 07-23-2011
@aLHaNz
c1 variable is holding a numeric value after all
the following code fragment
Code:
c1=`grep -w $title data.txt |grep -w $author|wc -l`

in simple speaking it says extract the lines that contains the value stored in the variable $title as a word then refine this extracted lines with another filter against the value stored in the variable $author then pass the out to some sort of line counter that what it says in final $c1 will hold a numeric value if conditions of combined filters are met.

I see no logical errors in the function
Code:
add_new_book

.
Also I see no string comparison in the snippet you sent except the pattern matching logic
 

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LEARN ABOUT POSIX

zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)
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