Populating an Array

Shell Programming and Scripting
1

Guys,

I need to iterate populate an array while going over files in directory. Can someone please tell me syntax I tried this but it isn't working ==>

for F in `ls -p "${directory1}" | grep -v "\/"`
do 
  cd "${directory2}"
    cmp  "${directory2}"/"${F}"  "${directory1}"/"${F}"  >/dev/null;REPLY=$?
  if [ ${REPLY} -eq 0 ]
  then
        file_arr_idd=($F)
	echo "$file_arr_idd[0]"
  else
        file_arr_diff=($F)
  fi
done
2

arr=(a b c)
but you can't add element using this method (I think, not checked).

Method 1, works with every posix-sh
init cnt:
idd=1
diff=1

using:
file_arr_idd[$idd]=$F
(( idd+=1 ))

      same way diff array
      file\_arr_diff[$diff]=$F
      \(\( diff\+=1 \)\)

Method 2, assosiative arrays in ksh
init array:
typeset -A file_arr_idd file_arr_diff
using ex:
file_arr_idd[$F]=1
file_arr_diff[$F]=1

print out used array id, ex:

for f in ${!file_arr_idd[*]}
do   
     echo $f
done
3

Hey kshji!! I just completed my Program I used the follwoing method to populated and run my array:

set -A file_arr_diff 
set -A file_arr_idd 
i=0
j=0


for F in `ls -p "${directory1}" | grep -v "\/"`
do 
  cd "${directory2}"
  F2=$(find "${directory2}" -name "$F")
  if [ "$F2" = "" ]
  then
        print "WARNING: Could not locate file : $F in $directory2"
  fi
  cmp  "${directory2}"/"${F}"  "${directory1}"/"${F}"  >/dev/null;REPLY=$?
  if [ ${REPLY} -eq 0 ]
  then
        file_arr_idd="${F}"
	((i+=1))
  else
        file_arr_diff[j]="${F}"
	((j+=1))
  fi
done

for FILES in ${file_arr_idd[*]} 
do
   echo "$FILES are identical" 
done
	
echo "********************************************************************************************"

for FILES in ${file_arr_diff[*]} 
do
   echo "$FILES are different" 
done

echo "************************************End of Program*******************************************"

---------- Post updated at 03:13 PM ---------- Previous update was at 03:13 PM ----------

Thanks a lot for your help and prompt reply :slight_smile: