Linux FTP put success output - linux

Question

I have a bash script that creates backups incrementally(daily) and full(on Mondays). Every 7 days the script combines the week of backups(full and Incremental) and sends them off to an FTP server, the problem i am having is i want to delete the files from my backup directory after the FTP upload is finished, but i cant do that until i know the file was successfully uploaded. I need to figure out how to capture the '226 transfer complete' so i can use that in an 'IF' statement to delete the backup files. Any help is greatly appreciated. also he is my FTP portion of the script
if [ -a "$WKBKDIR/weekending-$YEAR-$MONTH-$DAY.tar.gz" ]; then
HOST=192.168.40.30 #This is the FTP servers host or IP address.
USER=username #This is the FTP user that has access to the server.
PASS=password #This is the password for the FTP user.
ftp -inv $HOST << EOF
user $USER $PASS
cd /baks
lcd $WKBKDIR
put weekending-$YEAR-$MONTH-$DAY.tar.gz
bye
EOF
fi
I could use whatever mean i needed i suppose, FTP was something already setup for another backup function for something else, thanks
2nd EDIT Ahmed the rsync works great in test from command line, its a lot faster than FTP, the server is on the local network so SSH not that big of a deal but nice to have for added security, i will finish implementing in my script tomorrow, thanks again

Answer 1

FTP OPTION
The simple solution would be to do something like this:
ftp -inv $HOST >ftp-results-$YEAR-$MONTH-$DAY.out 2>&1 <<-EOF
user $USER $PASS
cd /baks
bin
lcd $WKBKDIR
put weekending-$YEAR-$MONTH-$DAY.tar.gz
bye
EOF
Also there is an issue with your here-document syntax; there is no space between << and the delimiter word (in your case EOF) and I added a - because you are putting white-spaces before the ACTUAL delimeter (it's tabbed in for the if / fi block) so the [-] is required
Now when you do this; you can parse the output file to look for the successful put of the file. For example:
if grep -q '226 transfer complete' ftp-results-$YEAR-$MONTH-$DAY.out; then
echo "It seems that FTP transfer completed fine, we can schedule a delete"
echo "rm -f $PWD/weekending-$YEAR-$MONTH-$DAY.tar.gz" >> scheduled_cleanup.sh
fi
and just run scheduled_cleanup.sh using cron at a given time; this way you will have some margin before the files are cleaned up
If your remote FTP server has good SITE or PROXY options you may be able to get the remote FTP to run a checksum on the uploaded file after successful upload and return the result.
SCP / RSYNC OPTION
Using FTP is clunky and dangerous, you should really try and see if you can have scp or ssh access to the remote system.
If you can then generate an ssh key if you don't have one using ssh-keygen:
ssh-keygen -N "" -t rsa -f ftp-rsa
put the ftp-rsa.pub file into the $HOST/home/$USER/.ssh/authorized_keys and you have a much nicer method for uploading files:
if scp -B -C weekending-$YEAR-$MONTH-$DAY.tar.gz $USER#$HOST:/baks/ ; then
echo Upload successful 1>&2
else
echo Upload failed 1>&2
fi
Or better yet using rsync:
if rsync --progress -a weekending-$YEAR-$MONTH-$DAY.tar.gz $HOST:/baks/ ; then
echo Upload successful 1>&2
else
echo Upload failed 1>&2
fi
et voilà you are done since rsync works over ssh you are happy and secure

Answer 2

Try the next
#!/bin/bash
runifok() { echo "will run this when the transfer is OK"; }
if [ -a "$WKBKDIR/weekending-$YEAR-$MONTH-$DAY.tar.gz" ]; then
HOST=192.168.40.30 #This is the FTP servers host or IP address.
USER=username #This is the FTP user that has access to the server.
PASS=password #This is the password for the FTP user.
ftp -inv <<EOF | grep -q '226 transfer complete' && runifok
user $USER $PASS
cd /baks
lcd $WKBKDIR
put weekending-$YEAR-$MONTH-$DAY.tar.gz
bye
EOF
fi
test it and when will run ok - replace the echo in the runifok function for your commands what want execute after the upload is succesful.