Shell Programming and Scripting

FNAME="abc.txt,def.txt,ghi.txt"

file[0]=abc.txt
file[1]=def.txt
file[2]=ghi.txt

file=`echo $FNAME | cut -d"," -f1-`

$ cat test.sh
FNAME="abc.txt,def.txt,ghi.txt"

awk_ndx=1
sh_ndx=0
while [ 1 -eq 1 ]; do
  filename=`echo $FNAME | awk '{ print $n }' n=$awk_ndx FS=","`
  [ "$filename" = "" ] && break
  file[$sh_ndx]=$filename
  awk_ndx=`expr $awk_ndx + 1`
  sh_ndx=`expr $sh_ndx + 1`
done

echo ${file[0]}
echo ${file[1]}
echo ${file[2]}
echo ${file[3]}

$ ./test.sh
abc.txt
def.txt
ghi.txt

for a in $file
do
        echo $a
done

$ cat test.sh
FNAME="abc.txt,def.txt,ghi.txt"

awk_ndx=1
sh_ndx=0
while [ 1 -eq 1 ]; do
  filename=`echo $FNAME | awk '{ print $n }' n=$awk_ndx FS=","`
  [ "$filename" = "" ] && break
  file[$sh_ndx]=$filename
  awk_ndx=`expr $awk_ndx + 1`
  sh_ndx=`expr $sh_ndx + 1`
done

echo all values = ${file[@]}
for a in "${file[@]}"; do
  echo $a
done

$ ./test.sh
all values = abc.txt def.txt ghi.txt
abc.txt
def.txt
ghi.txt

$ IFS="," files=( $FNAME )
$ echo ${files[1]}
def.txt
$ for f in ${files[*]}; do echo $f; done
abc.txt
def.txt
ghi.txt