You mean insert the date into the filename (append means to place at the end).

First you need to break the file name into its various parts: name, date and suffix:

Code:

file=TP_ccc_ddd_032307.txt
suffix=${file##*.}
name=${file%_*}
temp=${file%."$suffix"}
date=${temp#"$name"_}

Then you need to convert the date. You show two different formats, so two different conversion functions must be used. The first format is the ridiculous MMDDYY; the second, I assume, is YYYYMMDDHHMMSS.

To determine which format the date is in, check the length:

Code:

case ${#date} in
  6) six2date ;;
  14) fourteen2date ;;
esac

Then reassemble the filename and do the move:

Code:

newfile=${name}_$_DATE.$suffix
mv "$file" "$newfile"

Here are the other functions you will need:

Code:

monthname()
{
  case $1 in
    01) _MONTH=Jan ;;   02) _MONTH=Feb ;;
    03) _MONTH=Mar ;;   04) _MONTH=Apr ;;
    05) _MONTH=May ;;   06) _MONTH=Jun ;;
    07) _MONTH=Jul ;;   08) _MONTH=Aug ;;
    09) _MONTH=Sep ;;   10) _MONTH=Oct ;;
    11) _MONTH=Nov ;;   12) _MONTH=Dec ;;
  esac
}

six2date()
{
   temp=${1#??}
   year=$(( ${1%"$temp"} + 2000 )) ## Fix if last century is possible
   monthname "${temp%??}"
   day=${temp#??}
   _DATE=$_MONTH-$day-$year
}

fourteen2date()
{
   temp1=${1#????}
   year=${1%"$temp1"}
   temp2=${temp1#??}
   monthname ${temp1%"$temp2"}
   temp3=${temp2#??}
   day=${temp2%"$temp3"}
   _DATE=$_MONTH-$day-$year
}