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Adding a column

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# 1  
Old 12-07-2015
Adding a column
Hello ,

My requirement is to add additional column sequentially to a text file based on the column value -

i/p file

Code:
id1|varchar
id2|varchar
id3|number
id4|number
id5|date
id6|date

---------------------------------------
o/p file

colv1|id1 (if second column value is varchar then first value is colv then sequence)
similarly
colv2|id2
coln1|id3(if second column value is number then first value is coln then sequence)
similarly
coln2|id4
cold1|id5(if second column value is date then first value is cold then sequence)
similarly
cold2|id6


so the o/p will be

Code:
colv1|id1
colv2|id2
coln1|id3
coln2|id4
cold1|id5
cold2|id6

Please suggest , thanks!!
Last edited by Scrutinizer; 12-07-2015 at 04:16 PM.. Reason: CODE TAGS
# 2  
Old 12-07-2015
With (Posix-) shell internals
Code:
nv=0; nn=0; nd=0; while IFS="|" read c1 c2
do
  case $c2 in
  (varchar) x=v; seq=$((nv+=1));;
  (number) x=n; seq=$((nn+=1));;
  (date) x=d; seq=$((nd+=1));;
  (*) x=""; seq=0;;
  esac
  echo "col$x$seq|$c1"
done < input

Last edited by MadeInGermany; 12-08-2015 at 08:57 AM.. Reason: separate counters
This User Gave Thanks to MadeInGermany For This Post:
looney
# 3  
Old 12-07-2015
Try:
Code:
awk '{s=substr($2,1,1); print "col" s (++A[s]), $1}' FS=\| OFS=\| file

# 4  
Old 12-08-2015
A Perl alternative:

Code:
perl -ple 's/^(.*)\|(\w).*/"col$2".++$n{$2}."|$1"/e' pratik4891.file
colv1|id1
colv2|id2
coln1|id3
coln2|id4
cold1|id5
cold2|id6

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