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Full Discussion: ID generation in sequence
Top Forums Shell Programming and Scripting ID generation in sequence Post 302370982 by radoulov on Friday 13th of November 2009 04:38:59 AM
Old 11-13-2009
Quote:
Originally Posted by summer_cherry
Code:
while(<DATA>){
    s/(?<=<id>)(?=<id>)/$./e;
    print;
}
__DATA__
<data><id><id><name>a</name><addr>aaa</addr><phnumb>3456</phnumb><state>ca</state><city>ny</city></data>
<data><id><id><name>b</name><addr>bbb</addr><phnumb>4567</phnumb><state>la</state><city>nj</city></data>
<data><id><id><name>c</name><addr>ccc</addr><phnumb>5678</phnumb><state>nv</state><city></city></data>
<data><id><id><name>d</name><addr>ddd</addr><phnumb>6789</phnumb><state>oh</state><city></city></data>
<data><id><id><name>e</name><addr>eee</addr><phnumb>7890</phnumb><state>al</state><city></city></data>

Yes, this should work if every line contains the id tag and you can even omit the e modifier.

---------- Post updated at 10:38 AM ---------- Previous update was at 10:35 AM ----------
Quote:
Originally Posted by Sgiri1
[...]
hi error is thrown when i try to execute the below code
perl -pe'
s/<id></id>/"<id>".++$c."</id>"/e
' infile

[...]
Code:
% cat infile
<data><id></id><name></name><city></city></data>@@#<data><id></id><name></name><city></city></data>@@#<data><id></id><name></name><city></city></data>@@#<data><id></id><name></name><city></city></data>@@#

Code:
% perl -pe' 
  s|<id></id>|"<id>".++$c."</id>"|ge
  ' infile
<data><id>1</id><name></name><city></city></data>@@#<data><id>2</id><name></name><city></city></data>@@#<data><id>3</id><name></name><city></city></data>@@#<data><id>4</id><name></name><city></city></data>@@#

 

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