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Shell Programming and Scripting
Perl Pattern Matching:Unix Vs. Window (Is it OS dependent??)
Post 302306527 by Niroj on Monday 13th of April 2009 04:44:46 AM
04-13-2009
Perl Pattern Matching:Unix Vs. Window (Is it OS dependent??)
Hi All,
Below I am discussing the problem I am facing while using pattern matching in Unix & Window. Plz hv a look into it.
================
my $s="UPDATE A
SET s="klkkk'
;" ;
if ( $s =~ m/^[ ]*UPDATE[ ]+/i )
{
print $s;
}
else
{ print "no match";}
===================
Both should be working as same and you can see it works also.
But I found pattern matching sometimes behaves differently while copying or transfering the data from window to unix and vice-versa.
So main problem is may be due to transfering ...
But since we can't avoid that can we make some change in our script so that it will work same in any platform.
May be some some hidden character is creating the probelm.
Have you faced the samething???
Please reply and also suggest to avoid such problem.
Below I am discussing the problem I am facing while using pattern matching in Unix & Window. Plz hv a look into it.
================
my $s="UPDATE A
SET s="klkkk'
;" ;
if ( $s =~ m/^[ ]*UPDATE[ ]+/i )
{
print $s;
}
else
{ print "no match";}
===================
Both should be working as same and you can see it works also.
But I found pattern matching sometimes behaves differently while copying or transfering the data from window to unix and vice-versa.
So main problem is may be due to transfering ...
But since we can't avoid that can we make some change in our script so that it will work same in any platform.
May be some some hidden character is creating the probelm.
Have you faced the samething???
Please reply and also suggest to avoid such problem.
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LEARN ABOUT DEBIAN
gmatch
gmatch(3GEN) String Pattern-Matching Library Functions gmatch(3GEN) NAME
gmatch - shell global pattern matching SYNOPSIS
cc [ flag ... ] file ... -lgen [ library ... ] #include <libgen.h> int gmatch(const char *str, const char *pattern); DESCRIPTION
gmatch() checks whether the null-terminated string str matches the null-terminated pattern string pattern. See the sh(1), section File Name Generation, for a discussion of pattern matching. A backslash () is used as an escape character in pattern strings. RETURN VALUES
gmatch() returns non-zero if the pattern matches the string, zero if the pattern does not. EXAMPLES
Example 1: Examples of gmatch() function. In the following example, gmatch() returns non-zero (true) for all strings with "a" or "-" as their last character. char *s; gmatch (s, "*[a-]" ) ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
sh(1), attributes(5) NOTES
When compiling multithreaded applications, the _REENTRANT flag must be defined on the compile line. This flag should only be used in mul- tithreaded applications. SunOS 5.10 29 Dec 1996 gmatch(3GEN)