On Monday 27,February,2012 12:16 AM, Allan Wind wrote:
On 2012-02-26 23:30:55, lina wrote:
$ echo "GNU linux is cool" | sed -e 's/\(<[^ ]*>\)\([ ]*\)\(<[^ ]*>\)/\3\2\1/g'
GNU linux is cool
What is it that you are trying to do? The regex is looking for
It's an example from a book. I just clumsily wish to get some
improvement by understanding some examples.
<optional non-space>optional space<optional non-space>
and as there are no<> in the input nothing matches. The -n
argument to sed quite useful to see this in which case you use
the p command to print what matches.
Thanks,
Best regards,
/Allan
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