FTP from Server A to Server B

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Top Forums Shell Programming and Scripting FTP from Server A to Server B
# 1  
Old 07-30-2011
FTP from Server A to Server B

Hi All,

My Requirement is:

1) We will receive two zip files on every Friday on Server A.
say for example offshoreMonthly_20110727.zip,offshoreDaily_20110727.zip

2)The above files from Server A need to be transferred to Server B. Once the files got transferred successfully the above files need to be archived to Archive folder in Server A.

3)We may receive single file in some Friday.

4) I have to send email notification along with file names once the file(s) transferred successfully.
# 2  
Old 07-30-2011
you probably want to write a script that does the transfer and sends email, and then invoke the script from cron.

Your cron entry should look like:
00 23 * * 5  /path/to/script.sh 2> /path/to/Error.log

This sets the cron to invoke script at 11:00 pm, since you said you'd receive the files on Friday, you wanna make sure it runs after you receive the file.
And for the transfer itself, I'd suggest scp/ssh instead of ftp. You'll get the files there through a secure tunnel this way, plus you can speed up the transfer by compressing them on the way.
To use ssh, you need to setup the servers with keys, so that the sender can authenticate itself. This is not at all difficult, and there is extensive documentation on the subject.
E.g. here. I personally use RSA keys instead of DSA.

Once that is out of way, you can write the script:


d=`date +%Y%d%m`
cnt=`ls /path/to/files/offshore*_${d}.zip 2>/dev/null | wc -l`  #how many files do we have?
if [ $cnt -gt 0 ] ; then 
  tar czf - /path/to/files/offshore*_${d}.zip | ssh user@remote.server tar xzf - -C "/path/where/to/dump/them/"

if [ $result -ne 0 ]  ; then
  echo "Error ocurred when sending the $cnt files over. SSH returned $result" | mail -s error me@mydomain
  echo "$cnt files with date $d successfully sent over" | mail -s transferOK me@mydomain

The tarring is probably a little redundant, since your files are already zipped, but still, you have a more general way, in case you wanted to send over whole directories etc.
In your case, the sending could be simplified to

scp /path/to/files/offshore*_${d}.zip user@remoteHost:/path/to/targetDir

which wouldn't take much longer. Don't forget to make your script executable:
chmod 754 script.sh

and test it manually:

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