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Date: Sun, 13 Apr 2008 10:45:36 +0200 From: Ingo Molnar <mingo@...e.hu> To: Nick Andrew <nick@...k-andrew.net> Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Thomas Gleixner <tglx@...utronix.de>, "H. Peter Anvin" <hpa@...or.com> Subject: Re: [RFC] x86: Cleanup prose of Documentation/i386/IO-APIC.txt * Nick Andrew <nick@...k-andrew.net> wrote: > I'm doing a couple of cleanups to Documentation/i386/IO-APIC.txt > and I have a problem with this line, which is supposed to compute > a sample pirq= kernel parameter: > > echo -n pirq=; echo `scanpci | grep T_L | cut -c56-` | sed 's/ /,/g' > > The 'scanpci' command used to be part of xutils and/or XFree86. > Xorg implements "Xorg -scanpci" but the output is different and it won't > run while X is running. > > Firstly I propose using the $( ) construct rather than backticks, since > it is easier to read: > > echo -n pirq=; echo $( scanpci | grep T_L | cut -c56- ) | sed 's/ /,/g' > > Inside the backtics, instead of scanpci, I could do: > > lspci -v | grep IRQ | sed -e 's/.* IRQ \(\w\+\)/\1/' > > Is this an acceptable substitution? yeah, i guess so. Btw., that's rather arcane text - do people still have to use pirq= boot lines to get their boxes to boot? Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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