sed command

figure20012 · 08-06-2012, 01:59 AM

sed 's#.*://##' | sed 's:/.*::' | sed 's:^.*.([^.]*).[^.]*:1:' | uniq -c

Could anyone please tell me what this command does?

grail · 08-06-2012, 02:19 AM

Well how about you tell us where you are stuck? Remembering that sed allows any character to be used when doing a replace, the default being s///

The rest are regular expressions

etech3 · 08-06-2012, 03:23 AM

figure20012

Did you run it?

grail
12 hours in front of me! G'day

figure20012 · 08-06-2012, 05:20 AM

Quote:

Originally Posted by etech3

figure20012

Did you run it?

grail
12 hours in front of me! G'day

thats why i am asking :P
i dont know the effet of it on my linux box
please could you explain?

grail · 08-06-2012, 09:32 AM

Well as it stands the affect on your linux box will be nil as there is no input.

And here are 3 search results for "regular expressions"

http://www.zytrax.com/tech/web/regex.htm
http://www.regular-expressions.info/
http://www.regexlib.com/?AspxAutoDetectCookieSupport=1

sycamorex · 08-06-2012, 09:49 AM

Quote:

Originally Posted by grail

Well as it stands the affect on your linux box will be nil as there is no input.

On top of that, there's no -i flag in sed so even if there was some input, the results would only get displayed in a terminal window.

chrism01 · 08-06-2012, 07:09 PM

See also http://www.grymoire.com/Unix/Sed.html#uh-0

As per sycamorex & you would also have to feed it some data to work on

pixellany · 08-06-2012, 07:25 PM

Quote:

Originally Posted by figure20012

thats why i am asking :P
i dont know the effet of it on my linux box
please could you explain?

There are several possible answers, but they are all questions:
What is it **supposed** to do?
What happens when you run it?
Where did you get it?
etc.

My point---in case you were wondering---it that we need to understand the context of your question.