vgersh99, it seems to me that with nmap you are assigning values to variables ($1 and $3 in your example) and using those variables to re-format the string.

However, I did just realize that I also have to rename the _IN.TXT to lowercase. Does this mean the 2nd option is better?

Thanks again

you can try:
to map all CAPs to low case....
You can play with either 'nmap' and/or 'macdef' to get the desired result OR go the 'post processing' route, but it might interesting to figure out how to do it natively within ftp.

Althought this is more complicated ,u can try:

for EXT_FILE in $(ftp -n ${HOST} < files.ftp | grep -vE "^Passive|^total" |grep -v active|awk -F\SCA '{print $2}')
do
echo ${EXT_FILE} >>files_ext-list.tmp
done

cat files_ext-list.tmp|while read EXT_FILE
do
EXT_FILE2="$(echo ${EXT_FILE}|awk -F\_ '{print $1}')_in.txt"
echo "define(EXT_FILE,${EXT_FILE}) define(EXT_FILE2,${EXT_FILE2})" > out.macros
cat out.macros download_files.ftp | m4 -B64556 > temp.ftp
ftp -n ${HOST} < temp.ftp
done


Where:


cat files.ftp

user username password
passive
dir
bye


cat download_files.ftp

user username password
passive
get "SCA""EXT_FILE" "SCA""EXT_FILE2"
bye


Cheers