Shell Programming and Scripting

Hi,

I am currently using a shell script to transfer file to another machine non-stop using scp . below is my code :

Code:

#!/bin/bash
while :
do
scp /home/pc3/Desktop/b.html pc1@192.168.1.102:/home/pc1/Documents
done

After it transfer the first image, it needs 5 seconds to send the second image and need 5 seconds to send the third image ....

Is there any possible to let it send every 1seconds or even in milliseconds ?

Moderator's Comments:

please use code tags

just replace scp with rsync and run it as background process with & added at the end of your commands

Code:

#!/bin/bash
while :; do
        rsync /home/pc3/Desktop/b.html pc1@192.168.1.102:/home/pc1/Documents &
        sleep 0.03
done

Code:

#!/bin/bash
cnt=0
for fname in /home/pc3/Desktop/b.html/*
do
scp -pq $fname pc1@192.168.1.102:/home/pc1/Documents/  &
cnt=$(( $cnt + 1 )) 
a=$(( $cnt % 10 ))
[ $a -eq 0 ]] & wait
done
wait

WARNING:
This sends batches of files, then waits for those all to be sent. 10 is probably kind of high depending on your ethernet bus speeds and the network throughput. You want the max throughput without over-saturating the connection(s). And maybe let other users do things as well. This could be a great way to seriously annoy friends/bosses.

thanks for the quick reply ..

I am currently using cygwin in windows to run the script,

when i run the script, it give me error that

rsync: command not found

is there need to install any else program to make it run ?

and when i change the rsync in script and run in ubuntu machine, it gives error and the error is given below :

ssh_exchange_identification: Connection closed by remote host
rsync: connection unexpectedly closed (0 bytes received so far) [sender]
rsync error: unexplained error (code 255) at io.c(601) [sender=3.0.7]
ssh_exchange_identification: Connection closed by remote host



thanks in advance for the reply

Maybe you can run the CentOS on the vmware under your windows which supply you a full featured Linux environment as cygwin is just a Simulator without so many tools available

thanks again for the quick reply

the CentOS VM is install under windows (when startup it don't ask for dual boot and straight to windows and the CentOS Vm is run when calling inside windows )

or it is something like install ubuntu and windows in a machine (when startup, it will ask which 1 to boot) ??

sorry for my ignorance and thanks in advance for the reply

What i said just now were not to configure you computer dual boot, but just run CentOS on Vmware which were installed in your windows!
To perform dual boot and be able to choose which system to boot, just google it as it's so easy to do!