Shell Programming and Scripting

Server1 Uptime
server2 Uptime

server_list=`/tmp/hosts.list`

for server in $server_list
do
    while read line
    do
       cut -f1 -d" " //hosts.list has other info like IP address
       upt=`/usr/local/bin/ssh $server uptime`
       printf $server $upt
    done<$server
done

/tmp/hosts.list[1] : server1: not found
/tmp/hosts.list[2] : server2: not found

# First column goes in server, all the rest go in OTHERSTUFF
while read SERVER OTHERSTUFF
do
        /usr/local/bin/ssh "$SERVER" printf "${SERVER}: " ';' uptime
done < /tmp/hosts.list

server_list='/tmp/hosts.list'

for SERVER in $server_list
do
    while read line
    do
    /usr/local/bin/ssh "$SERVER" printf "${server} : " ';' uptime
    done < $server_list
done

ssh: /tmp/hosts.list: no address associated with name
ssh: /tmp/hosts.list: no address associated with name
ssh: /tmp/hosts.list: no address associated with name
.....

ssh: no address associated with name
ssh: no address associated with name
ssh: no address associated with name
....

server_list='/tmp/hosts.list'
while read server
do
   uptime=$(ssh $server "uptime")
   echo "$server $uptime" >> output.txt
done < $server_list