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Shell Programming and Scripting

match a pattern and print the line once

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# 8  
Old 07-13-2009
Quote:
Originally Posted by thanhdat
You can simply pipe your ouput to "uniq" and it would be fine !
could u give an example
# 9  
Old 07-13-2009
Did some silly error...coz could not check the code...
Try this:
Code:
if($0 ~ "<cisco:meNm>") {S=substr($1,13,11); if(S!=prevS) print S ;prevS=S}

# 10  
Old 07-13-2009
Quote:
Originally Posted by rakeshawasthi
Did some silly error...coz could not check the code...
Try this:
Code:
if($0 ~ "<cisco:meNm>") {S=substr($1,13,11); if(S!=prevS) print S ;prevS=S}

Thanks rakesh. its now ok.Smilie
# 11  
Old 07-13-2009
rakeshawasthi is right, "uniq" may strip other lines. Actually, "uniq" report or omit repeated lines, so if you are curious ^_^, you can try:
Code:
awk '.....' test.xml | uniq

# 12  
Old 07-13-2009
an associative array works quite well for this type of exercise

Code:
{
  x=substr($0,13,11)
  hit[x]=1
}
END {
   for(i in hit) {
    print i
    }
}

Last edited by vgersh99; 07-13-2009 at 11:20 AM.. Reason: code tags, PLEASE!
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