Linux shell script for delete old files from ftp

Question

There is a problem - need to store the database backup on the FTP. On the FTP should not be more than 10 back-ups, ie, After you add backup to FTP should be removed, the old

Answer 1

This one is dealing with sftp and has proper date check as the script from @Graeme is only working within one month:

#!/bin/bash
# get a list of files and dates from ftp and remove files older than ndays
ftpsite="sftp -b-  -oIdentityFile= -oPort=  @"
putdir="/data"

ndays=19

# work out our cutoff date
MM=`date --date="$ndays days ago" +%b`
DD=`date --date="$ndays days ago" +%d`
TT=`date --date="$ndays days ago" +%s`

echo removing files older than $MM $DD

# get directory listing from remote source
echo "
cd $putdir
ls -l
"|$ftpsite >dirlist

# skip first three and last line, ftp command echo
listing="`tail -n+4 dirlist|head -n-1`"

lista=( $listing )

# loop over our files
for ((FNO=0; FNO<${#lista[@]}; FNO+=9));do
  # month (element 5), day (element 6) and filename (element 8)
  # echo Date ${lista[`expr $FNO+5`]} ${lista[`expr $FNO+6`]}          File: ${lista[`expr $FNO+8`]}

  fdate="${lista[`expr $FNO+5`]} ${lista[`expr $FNO+6`]} ${lista[`expr $FNO+7`]}"
  sdate=`date --date="$fdate" +%s`
  # check the date stamp
  if [ $sdate -lt $TT ]
  then
      # Remove this file
      echo "$MM $DD: Removing  ${lista[`expr $FNO+5`]} /  ${lista[`expr $FNO+6`]} / ${lista[`expr $FNO+8`]}"
      $ftpsite <