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Top Forums Shell Programming and Scripting Extracting the strings matching a pattern from a word Post 302374109 by swapnil.nawale on Monday 23rd of November 2009 12:24:45 PM
Old 11-23-2009
Extracting the strings matching a pattern from a word

Hi All ,

I need to extract the strings that are matching with the pattern :
Code:
CUST.<AnyStringOfAnyLength>.<AnyStringOfAnyLength>

from a file and then write all these string into another file.

e.g. If a file SOURCE contains following lines :

Code:
IF(CUST.ABCD.EFGH==1) THEN
CUST.ABCD.EFGH = CUST.IJKL.MNOP + CUST.QRST.UVWX
CUST.YZA.BCDE = CUST.ABCD.EFGH -1
ENDIF

Then I need to extract following strings and write them to some other file DEST.
Code:
CUST.ABCD.EFGH
CUST.IJKL.MNOP
CUST.QRST.UVWX
CUST.YZA.BCDE 
CUST.ABCD.EFGH

Please suggest a solution or approach to meet required stuff.
TIA
 

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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 5.11 29 Dec 1996 gmatch(3GEN)
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