Shell Programming and Scripting

Hi Frdz, Can any one help me out. I have a issue like below.i have to write shell script in unix.

Server1 server2
====== =======
1.txt 1.txt
2.txt
3.txt

I have to copy the files from server1 to server2 only if the file is does not existed in server2, if the file existed in server2 leave that.

Thanx

you had some recent posts regarding file transfers as well.. what have you tried?

I used the following script, but it is copying everytime eventhough the file is existed in the destination server. can u suggest me by modifying this script.


$FILES="$SOURCE_LOCATION/*"
check=`ssh -n -l kiran 141.172.19.11 " ls $DESTINATION_LOCATION/$FILES | wc -l"`
if [ $check == 0 ]; then
scp $SOURCE_LOCATION$FILENAME $DESTINATION_IP$DESTINATION_LOCATION
echo "File Transferred Successfully....."
else
echo "The file is already existed in the destination..Sorry"
fi

Thanx

you should maybe try the tool "rsync"...

No Duke..I have to use scp only as per client requirements..
the problem is i have to iterate all the files in server1 and compared with server2 files. If the file is available in server2 skip the copy otherwise copy that file from server1 to server2

get a list of all the files in server 2

Code:

ssh ...user@server2 "ls -1 /somedir/" | while read files
do
   # do something
done

How can check the server1 files with server2 files..