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Full Discussion: Stripping out extensions when file has multiple dots in name
Top Forums Shell Programming and Scripting Stripping out extensions when file has multiple dots in name Post 302195032 by Nemelis on Wednesday 14th of May 2008 07:09:47 AM
Old 05-14-2008
Quote:
Originally Posted by Franklin52
Try this:

Code:
echo 'test.foo.extension' | sed 's/\(.*\)\..*/\1/'

Regards
Thanx.

After checking with a coleague who has used sed before in the past I understand what the regular expresion means:

"replace s with any number of characters followed by a dot followed by any number of characters and store the first set of any number of characters".

What he could not explain to me is why it finds the last dot in test.foo.extension and not the first dot (thus why it actually works). Since both "any number of characters" may contain dots (in theory) if I understand the man-pages (and his explanation) correctly.

Anyway since ".extension" is a fixed extension he came up with another solution (after reading your solution), which also works when the extension is not there (by accident) :
Code:
FNAME=echo "${FILE_NAME}"|sed 's/\(.*\)\.program/\1/'

(The actual "extension" is ".program")
Last edited by Nemelis; 05-14-2008 at 08:10 AM.. Reason: small typo
 

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pthread_detach

pthread_detach(3C)					   Standard C Library Functions 					pthread_detach(3C)

NAME

       pthread_detach - detach a thread

SYNOPSIS

       cc -mt [ flag... ] file... -lpthread [ library... ]
       #include <pthread.h>

       int pthread_detach(pthread_t thread);

DESCRIPTION

       The  pthread_detach()  function	is  used  to  indicate to the implementation that storage for the thread thread can be reclaimed when that
       thread terminates. In other words,   pthread_detach()  dynamically  resets  the	 detachstate  attribute  of  the  thread  to  PTHREAD_CRE-
       ATE_DETACHED.  After  a	successful  call  to  this  function,  it  would not be necessary to reclaim the thread using  pthread_join(). See
       pthread_join(3C). If thread has not terminated, pthread_detach() will not cause it to terminate. The effect  of	multiple  pthread_detach()
       calls on the same target thread is unspecified.

RETURN VALUES

       If successful, pthread_detach() returns	0. Otherwise, an error number is returned to indicate the error.

ERRORS

       The  pthread_detach() function will fail if:

       EINVAL	 The implementation has detected that the value specified by thread does not refer to a joinable thread.

       ESRCH	 No thread could be found corresponding to that specified by the given thread  ID.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       pthread_create(3C), pthread_join(3C), attributes(5), standards(5)

SunOS 5.11							    23 Mar 2005 						pthread_detach(3C)
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