RE: [CentOS] parsing /proc/cmdline

On Fri, 2008-03-07 at 11:59 -0500, Ross S. W. Walker wrote:

Ross S. W. Walker wrote:

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Jerry Geis wrote:

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Hi - I am not an expert at shell script writing. If /proc/cmdline looks like

option1 option2 ... ks=http://192.168.1.8/ks/ks.cfg option3 option 4 ...

How can I get the 192.168.1.8 out of this cmdline.

Try:

# IPADDR=`cat /proc/cmdline | sed 's/.*/([1-9][0-9]*.[0-9][0-9]*.[0-9][0-9]*.[0-9][0-9]*)/.*/\1/'`

This will find an IP in between /.../

Actually shorter sed line:

# IPADDR=`cat /proc/cmdline | sed 's/.*/([0-9]+.[0-9]+.[0-9]+.[0-9]+)/.*/\1/'`

And shorter still:

sed 's/.*/(([0-9]+.){3,}[0-9]+).*/\1/'

which uses {3,} to specify the 3 occurrences of [0-9]+.

However, I would simply go for something like:

sed 's,.*http://%5C(.*%5C)/ks/.*,%5C1,'

Jim