Shell Programming and Scripting

Hi All,
In my unix folder there are 2 types of files available. Indicator file & data file.
ABC2008110601.TXT
ABC2008110901.TXT
ABC2008111001.TXT
ABC2008111101.TXT
ABCIND2008110601.TXT
ABCIND2008110901.TXT
ABCIND2008111001.TXT
ABCIND2008111101.TXT
what i want is that first i need to get the list of indicator file based on its arrival. & based on that i need to get data filename.
# passing ABC as a input parameter.
for file in `ls $1IND*`
do
#this gives me list of indicator file.
ind_file=$file
data_file=????
done
to get data file i need to take substring from INDICATOR file.... cut -c7- .... but i am not able to get it. In my script, the processing requires first IND file & then data file. Once it completes for one day & it again start for next day.

can someone help me?

Code:

> cat do_it.sh
# to run -- do_it.sh ABC

# passing ABC as a input parameter.
f_parm=$1
for p_file in `ls ${f_parm}IND*`
   do
#this gives me list of indicator file.
#   ls -l $p_file
   ind_file=$p_file
   data_file=$(echo $ind_file | cut -c1-3,7- )
   echo ind_file=$ind_file
   echo data_file=$data_file
done

> do_it.sh ABC
ind_file=ABCIND2008110601.TXT
data_file=ABC2008110601.TXT
ind_file=ABCIND2008110901.TXT
data_file=ABC2008110901.TXT
ind_file=ABCIND2008111001.TXT
data_file=ABC2008111001.TXT
ind_file=ABCIND2008111101.TXT
data_file=ABC2008111101.TXT

Not only is ls unnecessary, but it will cause the script to fail if there are any matching filenames containing spaces. Use:

Code:

for p_file in "$f_parm"IND*`

What if the parameter passed in has more (or less) than 3 characters?

Code:

 data_file=$(echo "$ind_file" | cut -c1-${#f_parm},$(( ${#f_parm} + 4 ))- )

Thanks guys... I got the result