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Perl REGEX - How do extract a string in a line?

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Top Forums Shell Programming and Scripting Perl REGEX - How do extract a string in a line?
# 1  
Old 08-19-2009
Perl REGEX - How do extract a string in a line?
Hi Guys,

In the following line:

cn=portal.090710.191533.428571000,cn=groups,dc=mp,dc=rj,dc=gov,dc=br

I need to extract this string: portal.090710.191533.428571000

As you can see this string always will be bettween "cn=" and "," strings.

Someone know one regular expression to extract this string?

Any help will be very much appreciated

Best Regards
Pierre
# 2  
Old 08-19-2009
/^cn=([^,]*?),/
# 3  
Old 08-20-2009
Hi sweetblood,

Tanks a lot for your help!

I used your idea in the following code:

if( /cn=/ )
{
$result = $_;
$result =~ s/^cn=([^,]*?),//;
}
return $result

in this case your REGEX is returning cn=groups,dc=mp,dc=rj,dc=gov,dc=br

I need the opposite result.

I think a REGEX where in the first time remove the string cn=
so the result string will be portal.090710.191533.428571000,cn=groups,dc=mp,dc=rj,dc=gov,dc=br


The second REGEX will remove the entire string cn=groups,dc=mp,dc=rj,dc=gov,dc=br


To be lefting only the needed string portal.090710.191533.428571000

Can you help me?
Regards
Pierre
# 4  
Old 08-20-2009
try this...

Code:
echo cn=portal.090710.191533.428571000,cn=groups,dc=mp,dc=rj,dc=gov,dc=br | awk -F "cn=" '{print $2}' | awk -F "," '{print $1}'



---------- Post updated at 12:11 PM ---------- Previous update was at 11:04 AM ----------

euh, rather this...

Code:
echo cn=portal.090710.191533.428571000,cn=groups,dc=mp,dc=rj,dc=gov,dc=br | awk -F 'cn=|,' '{print $2}'

# 5  
Old 08-20-2009
Quote:
Originally Posted by maverick-ski
...
cn=portal.090710.191533.428571000,cn=groups,dc=mp,dc=rj,dc=gov,dc=br

I need to extract this string: portal.090710.191533.428571000
...
Someone know one regular expression to extract this string?
...
Try non-greedy regex match:

Code:
$ 
$ echo "cn=portal.090710.191533.428571000,cn=groups,dc=mp,dc=rj,dc=gov,dc=br" | perl -lne '/^cn=(.*?),/ && print $1'
portal.090710.191533.428571000
$

tyler_durden
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