AWK, multiple patterns per line 2

[Plavixo]

Hi there,

Forgive my inexperience, I haven't used AWK before. I'm a java writer normally! But I need to write an AWK script to print out certain html elements from webpages.

There may be several of these elements on one line. My question is, if there are more that one of these <tags> on a line, will awk pattern match the first one, perform the actions and then ignore the rest of the line? Or will it match the pattern, perform the action and then start where it left off, part way through the line?

If it does skip the rest of the line, how can I impliment a solution that will look at all the elements on a line?

Thank you for your help,
Plavixo

 

[PHV]

Unless you use the next instruction all patterns are checked.

Hope This Helps, PH.
FAQ219-2884
FAQ181-2886

 

[Annihilannic]

To identify multiple patterns on a line you need to do a for loop using the match() function, e.g.

echo 'blahyak
yakblahyakblahblah
yakyakyak
blah

'| awk '
        /blah/ {
                line=$0
                newline=""
                while(match(line,"blah")) {
                        print NR,substr(line,RSTART,RLENGTH)
                        line=substr(line,RSTART+RLENGTH)
                }
        }
'

Output is:

[tt]1 blah
2 blah
2 blah
2 blah
4 blah[/tt]

Annihilannic.

 

[Plavixo]

Fantastic, Thank you!