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Top Forums Shell Programming and Scripting i want to delete a file based on existing file in a directory Post 302070980 by vino on Tuesday 11th of April 2006 04:38:02 AM
Old 04-11-2006
man sh -> sub topic "Parameter Expansion".

Code:
       ${parameter#word}
       ${parameter##word}
              The  word  is  expanded to produce a pattern just as in pathname
              expansion.  If the pattern matches the beginning of the value of
              parameter,  then  the  result  of  the expansion is the expanded
              value of parameter with the shortest matching pattern (the ``#''
              case) or the longest matching pattern (the ``##'' case) deleted.
              If parameter is @ or *, the pattern removal operation is applied
              to  each  positional parameter in turn, and the expansion is the
              resultant list.  If parameter is an array  variable  subscripted
              with  @  or  *, the pattern removal operation is applied to each
              member of the array in turn, and the expansion is the  resultant
              list.

       ${parameter%word}
       ${parameter%%word}
              The  word  is  expanded to produce a pattern just as in pathname
              expansion.  If the pattern matches a  trailing  portion  of  the
              expanded value of parameter, then the result of the expansion is
              the expanded value of parameter with the shortest matching  pat-
              tern  (the  ``%''  case)  or  the  longest matching pattern (the
              ``%%'' case) deleted.  If parameter  is  @  or  *,  the  pattern
              removal  operation  is  applied  to each positional parameter in
              turn, and the expansion is the resultant list.  If parameter  is
              an  array  variable subscripted with @ or *, the pattern removal
              operation is applied to each member of the array  in  turn,  and
              the expansion is the resultant list.

 

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EvmEventNameMatch(3)					     Library Functions Manual					      EvmEventNameMatch(3)

NAME
EvmEventNameMatch, EvmEventNameMatchStr - Match event name LIBRARY
EVM Support Library (libevm.so, libevm.a) SYNOPSIS
#include <evm/evm.h> EvmStatus_t EvmEventNameMatch( const char *pattern, EvmEvent_t event, EvmBoolean_t *match); EvmStatus_t EvmEventNameMatchStr( const char *pattern, const char *candidate, EvmBoolean_t *match); OPERANDS
The event name pattern sought. The pattern may be any valid event name string. It may include wildcard characters in place of any compo- nent. The event containing the event name to be compared against the pattern. The result of the match. This parameter is set to EvmTRUE if the name matches the pattern, and to EvmFALSE if it does not. A character string to be matched against the pattern DESCRIPTION
Because special matching rules apply when deciding whether a candidate event name matches a known name, the EVM name matching functions should be used for matching purposes, rather than the C string comparison functions (memcpm(), strcmp()) . The EVM functions match an event name against a supplied pattern, ignoring any trailing appended components in the candidate name, and correctly matching wildcard characters. The EvmEventNameMatch function takes an event and an event name pattern as input, and returns an indication of whether the event contains a name which matches the pattern in the match output argument. The pattern may be any valid event name string, and may also include wildcard characters in place of any component. A wildcard * in the pattern matches zero or more name components. A ? matches exactly one compo- nent. A match occurs if the event name matches all components indicated by the pattern, even if the name has additional trailing elements. The EvmEventNameMatchStr function performs the same check as EvmEventNameMatch, but takes a character string as the candidate event name, rather than extracting it from a supplied event. Both functions set the match output argument to EvmTRUE if the name matches the pattern, and to EvmFALSE if it does not. RETURN VALUES
The comparison was successful. The value of the match parameter indicates whether the name matches the pattern. The supplied pattern con- tains invalid characters. The supplied event does not contain a name. ERRORS
None FILES
None SEE ALSO
Routines: memccpy(3), strcat(3) Event Management: EVM(5) EVM Events: EvmEvent(5) Programmer's Guide delim off EvmEventNameMatch(3)
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