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Top Forums Shell Programming and Scripting Removing a character from a variable and assigning it to another variable? Post 302397974 by alister on Tuesday 23rd of February 2010 12:57:57 PM
Old 02-23-2010
Hi, kshji

I don't understand how you come to the conclusion that ksh93 is somehow more posix-y than ksh88. If you take a look at the features it introduced (associative arrays, floating point arithmetic, new forms of parameter expansion, etc), 15 years later they're not part of the posix sh standard. If anything, ksh93 deviates further from the standard.

The example you chose, substring parameter expansion, exemplifies this. It is a feature that's supported by most modern variants of the bourne shell, but it is not part of posix. Any shell that does not implement it is not any less posix-compliant because of it. The same goes for the pattern/replacement parameter expansion that started this discussion. (Though they are both handy features, no doubt.)

I don't know about you, but i love shell chat Smilie

Regards,
alister

Last edited by alister; 02-23-2010 at 02:05 PM..
 

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PCRE-CONFIG(1)						      General Commands Manual						    PCRE-CONFIG(1)

NAME
pcre-config - program to return PCRE configuration SYNOPSIS
pcre-config [--prefix] [--exec-prefix] [--version] [--libs] [--libs-posix] [--cflags] [--cflags-posix] DESCRIPTION
pcre-config returns the configuration of the installed PCRE libraries: the options required to compile a program to use them. OPTIONS
--prefix Writes the directory prefix used in the PCRE installation for architecture independent files (e.g. /usr) to standard output. --exec-prefix Writes the directory prefix used in the PCRE installation for architecture dependent files (normally the same as --prefix) to standard output. --version Writes the version of PCRE installed to standard output. --libs Writes to standard output the command line options required to link with PCRE (e.g. -lpcre). --libs-posix Writes to standard output the command line options required to link with the PCRE POSIX emulation library (e.g. -lpcreposix -lpcre). --cflags Writes to standard output the command line options required to compile files that use PCRE (this often includes some -I options, but is blank on debian systems). --cflags-posix Writes to standard output the command line options required to compile files that use the PCRE POSIX emulation library (this often includes some -I options, but is blank on debian systems). Suppress printing of filenames when searching multiple files. AUTHOR This manual page was written by Mark Baker <mark@mnb.org.uk>, for the Debian GNU/Linux system (but may be used by others). SEE ALSO
pcre(3) PCRE-CONFIG(1)
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