question with remote copy...

[amonamon]

Hello..

I do have on one machine 20-30 files that need to copy to other machine in certain directory..

Machine A

2003file1
2003file2
2004file34
..
...

to copy from machine A fo machine B I did this:

rcp 2003file1 x1machineB:/path/to/copy/to

and that works for one file..also it works

rcp * x1machineB:/path/to/copy/to
to copy all files..

but I tried something like this:

if file exist on machine B that do not copy file..else if file does not exist on machine B copy if from Machine A to machine B

hmmm I hope I did not confuse U...

Thanks in advance..

[Yarek]

Hi,

You can use remsh or rexec to execute command from remote shell. To check if file exists and is ordinary file you can use somthing similar to follow:

if [ -f ]
then
......
......
else
......
......
fi

Unfortunately I can't use remsh and rexec ona my machines to test it.

good luck!

[amonamon]

yea I know that syintax..
But I need to chack from machine A weather file exist on machine B..
I mean 20 or 30 files..


if [ -e Subs$d ] ; then

rcp 2003file1 x1machineB:/path/to/copy/to

else
echo "test" >/dev/null
fi

Also I would like to note that I tryed this also:

for file in $(< dirlsttemp.dat);

do
...here I did put rsh..
done

[Peter Godron]

Hi,
have you thought about tar ?
tar your directory on Machine A
then transfer the dir.tar file
untar on Machine B

If a file in tarfile already exists on Machine B it will not overwrite, otherwise it will create the file.

This may require a test, as this is from memory.

[Yarek]

Amonamon,

Let assume you want to copy all files from your /dir on local host to /DIR on remote host

host_a is the local host
host-b ise the remote host

on host_a:

for file in `ls /homr/amonamon`
do
rexec host_b -l amonamon -n 'if [ ! -f /DIR/$file ];then ;fi'

done

rgds

[amonamon]

well..it looks same..with tar..

If I transfer all.tar as one file where all files are packed or if I transfer all files as
rsh * ...

I am thinking is it possible not to copy files that are copied for example day before..

one day I copy all files to remote machine..that is OK..
Next day..I want to copy just those that are new..if there are new files..

thanks..

[Oviwan · Accepted solution]

hey

Here is a script, it checks also the checksum.
hope it helps.

# cat test_copy.sh
#!/usr/bin/ksh

remote_machine=machineb
remote_path=/path/to/copy
local_path=/source/path
copy_user=root

files=$(ls ${local_path})

for file in ${files} ; do
exists=$(remsh ${remote_machine} ls ${remote_path} | grep -E ^${file}$ | wc -l )
if [ ${exists} -ne 1 ]
then
checksum=$(cksum ${local_path}/${file} | awk '{print $1}')
echo "Copy ${file}"
rcp ${local_path}/${file} ${copy_user}@{remote_machine}:${remote_path}/.
if [ ${checksum} -ne $(remsh ${remote_machine} cksum ${remote_path}/${file} | awk '{print $1}') ]
then
echo "False"
fi
else
echo "${file} exists"
fi
done

Don't forget to edit the .rhosts file for var copy_user.

Regards

[Peter Godron]

Hi,
please see:
man rdist
" rdist facilitates the maintaining of identical copies of files over multiple hosts. It preserves the owner, group, mode, and modification time of files if possible and can update programs that are executing."

but if you do want a script solution:
"remsh remote directory exist test"
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=862210

[amonamon]

thanks...I used part of that code...without chacksum...it was hard to implement for me..

but what is the meaning of :

grep ^${file}$

:(

thanks..it works..

[Oviwan]

it greps the files. if the name of the current file is test and in the directory is a file test_new then it would also count this file.

the ^ means its on the beginning of the filename and the $ at the end of the filename

for additional infos check "man regexp"

Regards

[James R. Ferguson]

Hi:

> but what is the meaning of :

grep ^${file}$

The argument passwd to 'grep' is a regular expression. The caret (^) means anchor pattern to match to the beginning of a line. The ${file} variable is expanded by the shell into whatever it represents. The dollar sign anchors the pattern to match to the end of a line.

Hence, the pattern to match must be the whole line to be succesfully matched.

Regards!

...JRF...

[Dennis Handly]

>but what is the meaning of: grep ^${file}$

Note there was no reason to use the -E overkill with the grep.

[amonamon]

Thanks for help guys

Cheers,