Bash Script to Replace one file in Listed systems

Question

I want to create a script to replace one file in listed CentOS systems under /usr/bin.

Eg: I need to Copy & Replace one file from a central location to multiple systems, (using root login).

path : /storage1/data/client /usr/bin/

Can anyone help with this?

My list sample,

10.20.1.2
10.20.1.3
10.20.1.4

Answer 1

How about using scp in a for loop?

for server in user1@server1 user2@server2 user3@server3
do
    scp /storage1/data/client "$server":/usr/bin/
done

If the servers are already in an array, you would use:

#!/bin/bash
for server in "${servers[@]}"
do
    scp /storage1/data/client "$server":/usr/bin/
done

If in a file (single server per line), you would write:

while IFS= read -r server
do
    scp /storage1/data/client "$server":/usr/bin/
done < serverfile

Of course you can manually add the root user if that is user you want to connect with (this also strips leading and trailing whitespace), like so:

while read server
do
    scp /storage1/data/client root@"$server":/usr/bin/
done < serverfile

If the number of servers is too large you could do the copying concurrently, like so:

for server in user1@server1 user2@server2 user3@server3
do
    scp /storage1/data/client "$server":/usr/bin/ &
done
wait