KSH fetching files from server A onto server B and putting on server C

Shell Programming and Scripting
1

Dear Friends,

Sorry for this basic request. But I just started learning Ksh recently and still I am a newbie in this field.

Q: I have files on one server and the date format is 20121001000009_224625.in which has year (yyyy) month (mm) and date (dd). I have these files on server A. The task which I am trying to accomplish is: I need to fetch these files onto server B dated 30 days older, bzip them and put them on server C. This script would run as a cronjob in server B. All servers are sun solaris.

Could anybody please help me with the code on serverB? Any help would be greatly appreciated.

2

First try to read about scp , rsync , find with mtime and ssh

1 Like
3

Currently I use scp to manually transfer the files onto server B from server A use bzip to compress them on server B and then again use scp to transfer them to server C(creating respective folders - eg. 201210 for oct 2012). But how can I include the conditions to check for name automatically (30 days old). how can i use scp as it prompts for passwords to be entered manually. Could you guide me accordingly please?

4

That's why i have given find and mtime

get the 30 day old files.

find /path/ -type f -mtime +30

Or check for date format

$ date +%Y%m%d
20121014

For avoid password promoting check for expect .

5

You need to have ssh-keys for passwordless ssh (scp, sftp, ssh).

ssh-keygen: password-less SSH login

Basically what you do is:
create ssh-keys on server A, on server B, and on server C.
then put keys on whatever node you want to connect to.

So If I want to connect FROM A to C, I first have to put my "A" keys over on "C".
keys live in authorized_keys in a special directory under your login directory:

mkdir /home/brownbob/.ssh
chmod 600  /home/brownbob/.ssh

Your home directory cannot be other writable - has to be 755 or 750.

1 Like
6

I have already set up the authorized users in the servers. Thanks to jim_macnamara.

How do i compare the file names to todays date? the format of the file name is 20121001000009_224625.in ..

and implement this in a if statement.. if the filename is < 30days prior to todays date scp the file to server B?

---------- Post updated at 06:14 PM ---------- Previous update was at 05:28 PM ----------

what is type f? Could you please help me with that..

7

20121001000009_224625.in for these files use..

ls 20121001* It will show files started with 20121001.

and for 30 days old file use

find /path/ -type f -mtime +30

Output is files, which are 30 days old. You can use this to scp:)

8

I am sorry if I put this wrongly.. but is the output going to give files older than 30 days or 30 days old? I am looking for older than 30 days.... Really sorry for mis-communicating.

For example: i will have files with 20121011.....dat 20120912....dat and many such months.

I want to just scp the files which are older than 30 days and scp them.

9

Yes it gives files older than 30 days.

for your above given formats do one thing.

for month sept and old.
Use
ls 201209* for sept.
ls 201208* for aug.