Shell Programming and Scripting

{idx=$1 FS $2 FS $3 FS $4 FS $5}

{idx=$2 FS $3 FS $4 FS $5 FS $6}

< AAA BBB CCC DDD EEE 123
< GGG HHH III JJJ KKK 100
> PPP QQQ RRR SSS TTT 111
> VVV WWW XXX YYY ZZZ 333
> AAA BBB CCC DDD EEE 124
> GGG HHH III JJJ KKK 99

doSomething with [> PPP QQQ RRR SSS TTT 111]  # first occurrence
doSomething with [> VVV WWW XXX YYY ZZZ 333]  # first occurrence
doSomething with [> AAA BBB CCC DDD EEE 124]  # last counter field increased from 123 to 124
doSomethingElse with [> GGG HHH III JJJ KKK 99] # last counter field decreased from 100 to 99

doSomethingElse with [< AAA BBB CCC DDD EEE 123]
doSomethingElse with [< GGG HHH III JJJ KKK 100]
doSomethingElse with [> PPP QQQ RRR SSS TTT 111]
doSomethingElse with [> VVV WWW XXX YYY ZZZ 333]
doSomething with [> AAA BBB CCC DDD EEE 124]

doSomething with [> PPP QQQ RRR SSS TTT 111]     # first occurrence
doSomething with [> VVV WWW XXX YYY ZZZ 333]  # first occurrence
doSomething with [> AAA BBB CCC DDD EEE 124]      # last field increment
doSomethingElse with [< GGG HHH III JJJ KKK 99]      # last field decrement

< SSS TTT UUU VVV WWW 456
< AAA BBB CCC DDD EEE 123
< GGG HHH III JJJ KKK 100
> PPP QQQ RRR SSS TTT 111
> VVV WWW XXX YYY ZZZ 333
> AAA BBB CCC DDD EEE 124
> GGG HHH III JJJ KKK 99

#!/bin/ksh

cat inputfile | while read f1 f2 f3 f4 f5 f6 f7 ; do

       linevar=`echo "$f2 $f3 $f4 $f5 $f6"`
       diffvar=`echo "$f1"`

if [[ $diffvar = ">" ]] ; then

       # search for recurring pattern in inputfile
       [ `grep "${linevar}" inputfile | wc -l` -eq 2 ] && { \
         # when pattern is found check last field if increment
         f7=`grep "${linevar}" inputfile | grep ">" | awk '{print $7}'`
         F7=`grep "${linevar}" inputfile | grep "<" | awk '{print $7}'`
         [ $f7 -gt $F7 ] && { echo "doSomething with [${linevar}]" ; } || { echo "doSomethingElse with [${linevar}]" ; }
       } || { \
         # doSomething with first occurence
           echo "doSomething with [${linevar}]"
       }

elif [[ $diffvar = "<" ]] ; then

       # search for non-recurring pattern in inputfile
       [ `grep "${linevar}" inputfile | wc -l` -eq 1 ] && { echo "doSomethingElse with [${linevar}]" ; }

fi

done

exit

doSomethingElse with [SSS TTT UUU VVV WWW]
doSomething with [PPP QQQ RRR SSS TTT]
doSomething with [VVV WWW XXX YYY ZZZ]
doSomething with [AAA BBB CCC DDD EEE]
doSomethingElse with [GGG HHH III JJJ KKK]