matching not working as expected...

sebelk · 07-05-2011, 07:14 AM

Hi,

I have the file /tmp/qqq that contains:

Code:

If I issue:

Code:

sed   /[0-9]\{3\}/p  /tmp/qqq

It prints all lines

I don't know why because if I run:

Code:

egrep [0-9]{3} /tmp/qqq

It outputs only:

Code:

I tried even with and without quoting or even with and with without "\" or even using "-r". OK in this little example I could use egrep but I am trying to do something more complex and sed would be useful if it worked as I (perhaps wrong) expected

Could you help me?

druuna · 07-05-2011, 07:17 AM

Hi,

Code:

sed -n '/[0-9]\{3\}/p' /tmp/qqq

Hope this helps.