Shell Programming and Scripting

#!/bin/ksh

method=$1

FILE_LIST=( $(find /someplace -type f -printf "%T@\t%p\n" 2>/dev/null | sort -r | awk '{print $2}') )

print "found ${#FILE_LIST[*]} files."

typeset -li counter=0
for file in ${FILE_LIST[*]}
do
    case $method in
	0)
	    [[ -f $file ]] \
	        && (( counter++ )) \
	        && continue
	    ;;
	1)
	    if [[ -f "$file" ]] ; then
		(( counter++ ))
		continue
	    fi
	    ;;
	*)
	    print "don't know that method"
	    exit 1
	    ;;
    esac

    print "should never get here: $file"
done

print "counter=$counter"

$ ./t60.ksh 1
found 106 files.
counter=106
$ ./t60.ksh 0
found 106 files.
should never get here: /someplace/.t60.ksh.swp
counter=106

(( ++counter ))
(( counter = counter + 1 ))
counter=$((counter+1))
let counter=counter+1

(( counter++ ))

(( ++counter ))
(( counter = counter + 1 ))
let counter=counter+1