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Full Discussion: hash, percent, carret, exclamation, etc special characters use
Top Forums Shell Programming and Scripting hash, percent, carret, exclamation, etc special characters use Post 302601562 by itkamaraj on Friday 24th of February 2012 02:17:15 AM
Old 02-24-2012
Answer for your questions

${string##substring} Deletes longest match of $substring from front of $string

${string%%substring} Deletes longest match of $substring from back of $string.

Code:
 
$ a=one.txt
$ echo $a
one.txt
$ echo ${a##*.}
txt
$ echo ${a%%.*}
one


For more :
Manipulating Strings
This User Gave Thanks to itkamaraj For This Post:
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LEARN ABOUT OSF1

wcsstr

wcsstr(3)						     Library Functions Manual							 wcsstr(3)

NAME

       wcsstr - Finds a wide-character substring

LIBRARY

       Standard C Library (libc)

SYNOPSIS

       #include <wchar.h>

       wchar_t *wcsstr(      const wchar_t *s1,      const wchar_t *s2);

STANDARDS

       Interfaces documented on this reference page conform to industry standards as follows:

       wcsstr(): XSH5.0

       Refer to the standards(5) reference page for more information about industry standards and associated tags.

PARAMETERS

       Specifies the wide-character string being searched.  Specifies the wide-character substring to be located.

DESCRIPTION

       The  wcsstr()  function	locates  the  first occurrence in the wide-character string pointed to by the s1 parameter of the sequence of wide
       characters in the wide-character string pointed to by the s2 parameter, excluding the terminating null wide character.

RETURN VALUES

       Upon successful completion, the wcsstr() function returns a pointer to the located wide-character substring or a null pointer when the sub-
       string  is  not	found.	If the s2 parameter points to a wide-character substring having 0 (zero) length, the wcsstr() function returns the
       entire wide-character string pointed to by parameter s1.

       [Tru64 UNIX]  On error, the function returns a null pointer.

RELATED INFORMATION

       Functions: strstr(3), wcswcs(3)

       Standards: standards(5) delim off

																	 wcsstr(3)
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