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Remove duplicate entry in one line

 
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# 1  
Old 07-05-2007
Remove duplicate entry in one line
Can anyone help me how can i print only the unique entry in a line?

MI_AP MI_AP MI_CM MI_MF
RC_NAP MBS_AP SF_RAN MBS_AP NT_CAR

so that it will on output the one unique entry per line.

MI_AP MI_CM MI_MF
RC_NAP MBS_AP SF_RAN NT_CAR

I can't find the same situation on the knowledge base.
# 2  
Old 07-05-2007
Code:
while read mLine
do
  echo $mLine | tr ' ' '\n' | sort | uniq | paste -d' ' -s -
done < input_file

# 3  
Old 07-05-2007
if the order matters...

nawk -f kharen.awk myFile.txt

kharen.awk:
Code:
!NF
{
  split("", arr)
  for(i=1; i<=NF; i++) {
    printf("%s%s", ($i in arr) ? "" : $i " ", (i==NF) ? "\n" : "")
    arr[$i]
  }
}

Last edited by vgersh99; 07-05-2007 at 03:34 PM..
# 4  
Old 07-05-2007
Vgersh,
Your solution would not print blank or empty lines.
# 5  
Old 07-05-2007
Quote:
Originally Posted by Shell_Life
Vgersh,
Your solution would not print blank or empty lines.
Ah, good catch - edited the previous post!

btw, 'sort -u' = 'sort | uniq'
Last edited by vgersh99; 07-05-2007 at 03:51 PM..
# 6  
Old 07-05-2007
It works now -- great!
In any event, here is another solution in shell only:
Code:
while read mLine
do
  echo $mLine | tr ' ' '\n' > Temp
  cat -n Temp | tr '\t' '|' | sort -t'|' -k2 | uniq +7 | sort | sed 's/.*|//'
| paste -d' ' -s -
done < input_file

 
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