Dan Nicholson wrote: > On 1/29/07, Bruce Dubbs <[EMAIL PROTECTED]> wrote: >> Dan Nicholson wrote: >>> On 1/28/07, Alexander E. Patrakov <[EMAIL PROTECTED]> wrote: >>>> Tushar Teredesai wrote: >>>>> cat /proc/version | head -n1 | cut -d" " -f1-3,5-7 >>> Pet peeve. Don't use cat to create input streams when the shell is >>> perfectly capable on it's own with <. >> vs >> >>> sed -n 's/.*gcc version \([^() ]*\)[() ].*/\1/p;q' < /proc/version >> >From an educational view, what's wrong with showing a different way of >> doing things. >> >> Actually Tush's version above is much clearer to me than your sed, >> although I don't think the head -n1 is needed (it may be in some cases, >> but not for my systems). > > OK, but it still needs to be fixed to work on Debian. Here's the > output from Alexander's version string: > > [ 5:28 PM [EMAIL PROTECTED] cat foo | head -n1 | cut -d" " -f1-3,5-7 > Linux version 2.6.18-3-686 2.6.18-7) ([EMAIL PROTECTED]) (gcc > > It might be best to cat the whole file like he mentioned unless you > want to have a much more heavy duty parser.
OK, I see now. Debian adds a field to their string. In that case a sed is definitely needed. >From one of mine (Obviously not LFS): Linux version 2.6.9-42.0.3.EL_lustre.1.5.97smp ([EMAIL PROTECTED]) (gcc version 3.4.4 20050721 (Red Hat 3.4.4-2)) #1 SMP Fri Jan 12 17:22:43 MST 2007 And Alex: Linux version 2.6.18-3-686 (Debian 2.6.18-7) ([EMAIL PROTECTED]) (gcc version 4.1.2 20061115 (prerelease) (Debian 4.1.1-20)) #1 SMP Mon Dec 4 16:41:14 UTC 2006 How about: $ sed -r 's/.*(gcc version [01234567890\.]+).*/\1/' /proc/version gcc version 4.0.3 I don't like all those backslashes. :) -- Bruce -- http://linuxfromscratch.org/mailman/listinfo/lfs-dev FAQ: http://www.linuxfromscratch.org/faq/ Unsubscribe: See the above information page
