I am trying to fetch a directory from multiple Linux hosts to a localhost via a bash script. But the hostname command shows the output of localhost instead of the remote host. The directory structure is : /home/user/HOSTNAME-BCKP on all the servers.
#!/bin/bash
for i in $(cat hosts);
do
scp -r $i:/home/user/`hostname`-BCKP/home/user/ALL-BCKPs/;
done
If you want the hostname-command to show the remote hostname, you need to run it on the remote host.
You could read them into an associative array and loop over that:
#!/bin/bash -
declare -A myhosts
for item in $(cat hosts); do
myhosts[$item]="$(ssh $item 'hostname')"
done
for key in "{!myhosts[@]}" ; do
scp -r $key:/home/user/${myhosts[$key]}-BCKP /home/user/ALL-BCKPs/
done
But if you want to do this more than once, consider creating a file with a pair of host and hostname per line.
You can read that in a while-loop:
while read -r myhost myhostname; do
# do something with $myhost and $myhostname
done < yourfile
