Shell Programming and Scripting

#!/bin/bash

 filter=('ubb' 'um2' 'uuu' 'uvv' 'uw1' 'uw2' 'uwh')
 let num=`ls -l | grep 'sk' | wc -l`
 read -a lines <<< `ls -l | grep 'sk' | awk '{print $8}'`

 let finum=${#fi[@]}

 for ((i=1;i<=$num;i++))

    do

        for ((c=4;c<6;c++))

            do
                
            for ((q=0;q<finum;q++)); do

            grep -q "${filter[$q]}" "${lines[$i-1]}" && fitemp="${filter[$q]}" || fitemp=0
            echo ${filter[$q]} ${lines[$i-1]}
            echo $c : $fitemp
            echo ''
                done

            #uvotmaghist ${lines[$i-1]} $fitemp$c.fits $fitemp$c.gif CALDB CALDB CALDB src$c.reg bkg$c.reg

            done

    done

...
 let finum=${#filter[@]}
...

filter=('ubb_sk' 'um2_sk' 'uuu_sk' 'uvv_sk' 'uw1_sk' 'uw2_sk' 'uwh_sk')