Shell Programming and Scripting

Still new to bash. Using debian lenny 5, bash version 3.2.39. I'm working on three scripts. I need help completing them.

One script that inputs a plain text file, echo then chop it up into separate whitespace-delimited strings as an output. Not sure how to do this...

for example, the content could be this:

Code:

550e8400-e29b-41d4-a716-446655440000John doe 543    192.168.1.1

Second script that inputs a plain text file and output is stripped of uuid's (all versions) and ip addresses for example

Code:

550e8400-e29b-41d4-a716-446655440000John doe 543    192.168.1.1 
to 
John doe 543

I would guess with the exception of [0-9A-Z] with awk?


also not sure how to do this.

Third script that input a plain text file and output the unique lines, sorted according to their frequency
code so far:

Code:

  
sort | uniq -c | sort -nr 

done >> output.txt

---------- Post updated at 11:39 PM ---------- Previous update was at 04:02 PM ----------

Ok so I got two scripts done. I actually just need help on the second script.

Try:

Code:

sed -e 's/\([0-9a-f]\{4,\}-\)\{4\}[0-9a-f]\{12\}//g' -e 's/\([0-9]*\.\)\{3\}[0-9]*//g' infile

or

Code:

sed -r 's/([0-9a-f]{4,}-){4}[0-9a-f]{12}//g;s/([0-9]*\.){3}[0-9]*//g' infile

if you have GNU sed

Thanks! It worked! If you don't mind, I have one more question. I need to use a similar sed command to filter out this kind of data:

Code:

 1246346269-d1989834dbd34170e1a29310191e9dcf63538368202ee72eae62d

I can modify the one you provided right? For instance

I know

Code:

's/\([0-9a-f]\

is the first 8 digits including letters,

Code:

 {4,\}-\)\{4\}

is the next 8 digits with the dashes, and

Code:

[0-9a-f]\{12\}//g'

is the last 12 characters; correct? so the code would be something like

Code:

 sed -e 's/\([0-9]\{10,\}-\)[0-9a-f]\{53\}//g'

?

Hi, not exactly.

Code:

[0-9a-f]\{4,\}-

means a sequence of 4 or more hexadecimale digits ( a-f being lowercase ) followed by a dash.

Code:

\(...\)\{4\}

means the sequence in escaped parentheses( "\(" and "\)" ) is repeated 4 times in its entirety.
So combing these two, 4 hexadecimal numbers followed by dashes of minimally 4 hexadecimal characters...

Correct. the g of course means there can be multiple occurrences of the entire match per line.

Yes, that would match it. You could lose the comma if the first part is always exactly 10 digits, and also you do not need the escaped parentheses.

Code:

sed -e 's/[0-9]\{10\}-[0-9a-f]\{53\}//g'

Thanks again for your help!