[ILUG] bloody redhat network init scripts (and regex's)

[Kevin O Riordan]

On Setting Orange, the 44th day of Confusion, Paul Jakma croaked:
> grrrr.....
[snip]
> ls ifcfg* | egrep -v '(ifcfg-lo|:|rpmsave|rpmorig|rpmnew)' |  egrep -v
> '(~|\.bak)$' | egrep -v 'ifcfg-ippp[0-9]+$' |  egrep
> 'ifcfg-[a-z0-9]+$' | sed 's/^ifcfg-//g'
> 
> (with /etc/sysconfig/network-scripts as PWD).
> 
> so how can i modify the sed so that it spits out any eth? interfaces
> before any remaining interfaces? (or any other suggestion as to how to
> quickly get this to spit out eth? before other interfaces).

Had a look at our (old) RH networking scripts ...

A quick job:

eth_interfaces=`ls ifcfg* | \
  egrep -v '(ifcfg-lo|:|rpmsave|rpmorig|rpmnew)' | \
  egrep -v '(~|\.bak)$' | egrep -v 'ifcfg-ippp[0-9]+$' | \
  egrep 'ifcfg-[a-z0-9]+$' | sed 's/^ifcfg-//g' | egrep '^eth0'`
                                                ^^^^^^^^^^^^^^^^
non_eth_interfaces=`ls ifcfg* | \
  egrep -v '(ifcfg-lo|:|rpmsave|rpmorig|rpmnew)' | \
  egrep -v '(~|\.bak)$' | egrep -v 'ifcfg-ippp[0-9]+$' | \
  egrep 'ifcfg-[a-z0-9]+$' | sed 's/^ifcfg-//g' | egrep -v '^eth0'`
                                                ^^^^^^^^^^^^^^^^^^

interfaces="$eth_interfaces $non_eth_interfaces"


HTH
-kev
-- 
	"The majority of the stupid is invincible and guaranteed
	 for all time.  The terror of their tyranny, however, is
	 alleviated by their lack of consistency."
               - Albert Einstein