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Re: Remote Debugging XC 2.3 -> OS 10.3.9

Subject: Re: Remote Debugging XC 2.3 -> OS 10.3.9
From: Steve Checkoway <email@hidden>
Date: Thu, 29 Jun 2006 13:02:25 -0700
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On Jun 29, 2006, at 11:29 AM, Jeff Nordquist wrote:

I wish I knew Perl to understand what this line is doing:
exec perl -e 'while($len = sysread(STDIN, $buf, 1024)){$buf =~ s /- break-insert -l -1/-break-insert/g; syswrite(STDOUT, $buf, $len);}' | "$gdb" "$@"

The perl expression is simple, it's reading 1024 bytes from standard in into the variables $buf. Then it's replacing all instances of "- break-insert -l -1" with "-break-insert". Then it writes it to standard out.

I'm not really sure where this script is coming from or why it's avoiding buffered I/O. I'm not sure what the format of this data that's being piped to gdb is in but if I were writing it, it'd be

exec perl -ne 's/-break-insert -l -1/-break-insert/g;print' | "$gdb" "$@"

which I believe is less error prone since it'll read it a line at a time.

--
Steve Checkoway

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References:
	>Remote Debugging XC 2.3 -> OS 10.3.9 (From: Jeff Nordquist <email@hidden>)
	>Re: Remote Debugging XC 2.3 -> OS 10.3.9 (From: Chris Espinosa <email@hidden>)
	>Re: Remote Debugging XC 2.3 -> OS 10.3.9 (From: Jeff Nordquist <email@hidden>)
	>Re: Remote Debugging XC 2.3 -> OS 10.3.9 (From: Michael Ryan Bannon <email@hidden>)
	>Re: Remote Debugging XC 2.3 -> OS 10.3.9 (From: Jeff Nordquist <email@hidden>)
	>Re: Remote Debugging XC 2.3 -> OS 10.3.9 (From: Michael Ryan Bannon <email@hidden>)
	>Re: Remote Debugging XC 2.3 -> OS 10.3.9 (From: Jeff Nordquist <email@hidden>)

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