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Top Forums Shell Programming and Scripting Extracting substring from variable Post 302973534 by shamrock on Wednesday 18th of May 2016 11:17:53 AM
Old 05-18-2016
The one below should work irrespective of shell version...
Code:
export var="DR"
echo ${var%"${var#[A-Z]}"}
D

 

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WCSSTR(3)						     Linux Programmer's Manual							 WCSSTR(3)

NAME
wcsstr - locate a substring in a wide-character string SYNOPSIS
#include <wchar.h> wchar_t *wcsstr(const wchar_t *haystack, const wchar_t *needle); DESCRIPTION
The wcsstr() function is the wide-character equivalent of the strstr(3) function. It searches for the first occurrence of the wide-charac- ter string needle (without its terminating null wide character (L'')) as a substring in the wide-character string haystack. RETURN VALUE
The wcsstr() function returns a pointer to the first occurrence of needle in haystack. It returns NULL if needle does not occur as a sub- string in haystack. Note the special case: If needle is the empty wide-character string, the return value is always haystack itself. CONFORMING TO
C99. SEE ALSO
strstr(3), wcschr(3) COLOPHON
This page is part of release 3.44 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. GNU
2011-09-28 WCSSTR(3)
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