Htydjtk

I work on a company that will not let me install any software on my computers and I run awful windows there.

I need to clean a lot of texts I copy from the intranet and save as a txt file. So I have to use sed and/or awk online live editors, like this or this

These texts are like this

01



010010-26.2010.501.0026  fafas fasdf asdf asdfsadf asdfasd fasd asasdff



fdfsadf adsf adsf asdf asdfas fadsf asdfa



02



0011-15.2016.501.0012  fafas fasdf asdf asdfsadf asdfasd fasd asasdff

asdfasd fasd asasdff

asdfasd fasd asasdff

0011-125.2013.501.0012

asdfasd fasd asasdff

See the numbers like 0011-15.2016.501.0012 this is what I want. I do not care for the rest but I want to create a new clean text with all these numbers, one per line. In the previous example, I need a text with

010010-26.2010.501.0026

0011-15.2016.501.0012

0011-125.2013.501.0012

the .501. is always present, in all numbers, as the 4th group.

I have tried this command on the sed online editor

's/([0-9]*-[0-9]*.[0-9]*.501.[0-9]*)/1/'

Not working.

It does work, but you don't change anything, or rather change it to what it was. But with very small modification of this code you can get what you want:

sed -n 's/([0-9]*-[0-9]*.[0-9]*.501.[0-9]*).*/1/p'

Notice three things:

• 
  -n switch, it means to not print anything by default


• 
  .* at the end of the group selected with (...)
  


• 
  p as a last command means print this line

Result:

010010-26.2010.501.0026

0011-15.2016.501.0012

0011-125.2013.501.0012

BTW, you can simplify a little by adding -E and using extended regular expression, i.e. get rid of backslashes in front of capturing groups:

sed -E -n 's/([0-9]*-[0-9]*.[0-9]*.501.[0-9]*).*/1/p'

Both ways work on mentioned webpage.

It is fairly straight forward with AWK, b/c usually AWK doesn't do anything, so we just need to tell it when to do things, i.e. print the ID at the beginning of the line, if it's there

/^[0-9]+-[0-9]+.[0-9]+.501.[0-9]+/{

    print $1

}

With sed it's a little different, b/c by default sed will print everything. (At least that's how these tools have been working for me.) First, we need to invoke sed as sed -n, to change its default behaviour to not do anything. Then we can

s/^([0-9]+-[0-9]+.[0-9]+.501.[0-9]+).*$/1/p

We need the p at the end to tell sed to print the result, if we had a matching pattern. Your particular sed expression is a NOOP because it replaces every match with itself and prints everything else as it was.