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Source

#!/bin/bash
#
# Synchronise deux répertoires en utilisant FTP

HOST="myserver.com"
LOGIN="mylogin"
PASSWORD="mypass"
LOCALDIR="$1"
REMOTEDIR="$2"
EXCLUDED="*.*~"

function Usage()
{
  echo -e "\n  Synchronise un répertoire local avec un répertoire distant en utilisant FTP";  
  echo -e "\n  USAGE: ftpsync local_dir";
  echo;
}

if [ "$LOCALDIR" = "" ]
then
  echo -e "  ERREUR: Veuillez spécifier un répertoire local";
  Usage;
  exit 1;
fi

if [ "$REMOTEDIR" = "" ]
then
  echo -e "  ERREUR: Veuillez spécifier un répertoire distant";
  Usage;
  exit 1;
fi

if [ -e "$LOCALDIR" ]
then
  lftp -c "set ftp:list-options -a;
  open ftp://$LOGIN:$PASSWORD@$HOST; 
  lcd $LOCALDIR;
  cd $REMOTEDIR;
  mirror --reverse \
         --delete \
         --verbose \
         --exclude-glob $EXCLUDED";
fi

check if folder/file exists

#!/bin/bash

wget --tries=1 --spider -S ftp://myserver.com/test 2>&1 | grep "No such file" > /dev/null && echo "not exist" || echo "exist"
wget --tries=1 --spider -S ftp://myserver.com/testa 2>&1 | grep "No such file" > /dev/null && echo "not exist" || echo "exist"