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这两个系统行:
#if [[ abcfoobarbletch =~ 'foo(bar)bl(.*)' ]]; then echo matches; fi
matches
#bash --version
GNU bash, version 3.00.16(1)-release (sparc-sun-solaris2.10)
Copyright (C) 2004 Free Software Foundation, Inc.
#uname -a
SunOS t1000 5.10 Generic_118833-33 sun4v sparc SUNW,Sun-Fire-T1000 Solaris
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#if [[ abcfoobarbletch =~ 'foo(bar)bl(.*)' ]]; then echo matches; fi
matches
#bash --version
GNU bash, version 3.00.16(1)-release (powerpc-ibm-aix5.1)
Copyright (C) 2004 Free Software Foundation, Inc.
#uname -a
AIX aix 3 5 00C97AC04C00 powerpc unknown AIX
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这两个系统不行:
#if [[ abcfoobarbletch =~ 'foo(bar)bl(.*)' ]]; then echo matches; fi
#bash --version
GNU bash, version 3.2.39(1)-release (x86_64-pc-linux-gnu)
Copyright (C) 2007 Free Software Foundation, Inc.
#uname -a
Linux ubuntu 2.6.24-22-generic #1 SMP Mon Nov 24 19:35:06 UTC 2008 x86_64 GNU/Linux
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#if [[ abcfoobarbletch =~ 'foo(bar)bl(.*)' ]]; then echo matches; fi
#bash --version
GNU bash, version 4.0.24(0)-release (amd64-portbld-freebsd7.2)
Copyright (C) 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
#uname -a
FreeBSD freebsd.unix-center.net 7.2-RELEASE-p4 FreeBSD 7.2-RELEASE-p4 #0: Fri Oct 2 08:22:32 UTC 2009 root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64
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