Stephen Harris wrote:
On Fri, May 23, 2008 at 06:02:29PM +0200, Mihai T. Lazarescu wrote:
On Fri, May 23, 2008 at 08:41:19AM -0700, Scott McClanahan wrote:
1.1.1.1 foo
10.10.10.10 bar bar2
100.100.100.100 foobar foobar2 foobar3
== After ==
1.1.1.1 foo.contoso.com
10.10.10.10 bar.contoso.com bar2
100.100.100.100 foobar.contoso.com foobar2 foobar3
Any advice on how to pull this off? Thanks.
sed 's/ /.contoso.com '
That works because we've explicity been told
<ip address> <tab> <short hostname> <space> <short hostname alias>
so the first space is a good place to switch.
More generally, if there's possibly multiple spaces or tabs in multiple
places this might work:
sed 's/^\([^ ]*[ ]*[^ ]*\)\([ ]*.*\)$/\1.contoso.com\2/'
(where there's a space *and* a TAB inside each of the [ ] )
The above version easier to read and "copy paste". Space is space and tabe is \t
sed 's/^\([^ \t]*[ \t]*[^ \t]*\)\([ \t]*.*\)$/\1.contoso.com\2/'
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