That is a very clever trick. Saved for future reference. Thank you Jason. <div>On 7/19/07, Jason Kohles <<a href="mailto:email@jasonkohles.com">email@jasonkohles.com </a>> wrote:<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">On Jul 19, 2007, at 10:07 AM, Ed Brown wrote: >> Use python instead. > > Or perl. You can substitute any parameter name you want from /proc/ > cmdline, in place of the string 'ip' in the example given earlier: > > ip=`cat /proc/cmdline |perl -e 'if (<> =~ /\sip=(.*?)\s/) {print > $1}'` > > ESXIP=`cat /proc/cmdline |perl -e 'if (<> =~ /\sESXIP=(.*?)\s/) > {print $1}'` > Or you can use the -n option to perl, which makes it work quite a bit like awk anyway (see the perlrun man page)... ESXIP=`perl -ne '/ESXIP=(\S+)/ && print $1' /proc/cmdline` What I usually do though, is just exploit bash to do the whole thing. Stick this at the top of a %pre/%post script, and it will take anything of the form var=value from /proc/cmdline and turn it into a variable you can use directly... set -- `cat /proc/cmdline` for I in $*; do case "$I" in *=*) eval $I;; esac; done You can try it from the command line to see how it works... [root@dev1-mgmt-01 ~]# cat /proc/cmdline ro root=/dev/SystemVG/RootLV [root@dev1-mgmt-01 ~]# set -- `cat /proc/cmdline` [root@dev1-mgmt-01 ~]# for I in $*; do case "$I" in *=*) eval "$I";; esac; done [root@dev1-mgmt-01 ~]# echo $root /dev/SystemVG/RootLV -- Jason Kohles <a href="mailto:email@jasonkohles.com">email@jasonkohles.com </a> <a href="http://www.jasonkohles.com/">http://www.jasonkohles.com/</a> "A witty saying proves nothing." -- Voltaire _______________________________________________ Kickstart-list mailing list <a href="mailto:Kickstart-list@redhat.com">Kickstart-list@redhat.com</a> <a href="https://www.redhat.com/mailman/listinfo/kickstart-list">https://www.redhat.com/mailman/listinfo/kickstart-list</a> </blockquote></div>