Examples ssh several distribution

# Example ------------------------- --------------------- basic commands -----------------------------------------------

scp /server/data/wget root@backup:/home
ssh -t root@backup sudo rsync /home/wget /server/data

scp /server/data/wget root@web01:/home
ssh -t root@web01 sudo rsync /home/wget /server/data

# ---------------------- ------------------------ bulk data transfer --------------------------------
the available ## in cat txta pre-written to handle text

for n in nfs01 m01 web01 web02
    do
        ssh  root@$n hostname
        scp  $FILE root@${n}:${DEST}
        echo "------------------------------------------" 
    done

# -------------- can add $ 1 parameter and then execute the command ---------------------------- -----------------------------------------------

#!/bin/bash
## 判断$#(参数) 是否等于1
if [ $# -ne 1 ];then
        echo "USAGE:/bin/sh $0 ARG1"
        exit 1
fi
for n in 8 31 41
        do
                echo =======172.16.1.$n
                ## $1 可以换成任何执行命令
                ssh [email protected].$n "$1"
done