touch xscp.sh
chmod +x xscp.sh

#!/bin/bash
for line in `cat $1`
do
 if [ "$3" == "" ]
 then
 # dir
 echo scp -r $2/ $line:$2/
 scp -r $2/ $line:$2/
 else
 # files
 echo scp ${@:3} $line:$2/
 scp ${@:3} $line:$2/
 fi
done

touch xcall.sh
chmod +x xcall.sh

#!/bin/bash
params=${@:2}
for line in `cat $1`
do
 echo "============= {print %s, $line} $params ============="
 ssh $line "$params"
done

touch xcall-keytool-list.sh
chmod +x xcall-keytool-list.sh

#!/bin/bash
params=${@:2}
for line in `cat $1`
do
 echo "============ $line $params ============="
 /usr/bin/expect << EOF
 set time 20
 spawn ssh $line "$params"
 expect {
 "*password:"
  { send "changeit\r" } 
 }
 expect eof
EOF
done

touch xcall-interaction.sh
chmod +x xcall-interaction.sh

#!/bin/bash
# IP文件
iptxt=$1
# 要执行的命令
command=$2
# 交互时输入项(yes/no|password)
initem=$3
# 交互输入内容(yes | 密码)
input=$4
echo "--- command:$command ---"
echo "--- 输入项:$initem ---"
echo "--- 输入内容:$input ---"
for line in `cat $iptxt`
do
 echo "============ $line $command ============="
 if [ "$initem" = "" ]
 then
 ssh $line "$command"
 else
 /usr/bin/expect << EOF
 set time 20
 spawn ssh $line "$command"
 expect {
  "*$initem:"
  { send "$input\r" } 
 }
 expect eof
EOF
 fi
done

./xcall-interaction.sh ip.txt "/home/software/java/bin/keytool -list -keystore /home/software/java/jre/lib/security/cacerts | grep baidu" password changeit

#!/bin/bash
function replace(){
　　for file in `ls $1`
　　do
　　　　for file1 in `ls $2`
　　　　do
　　　　if [ $file1 = $file ];
　　　　then
　　　　　　cp -f $1"/"$file $2
　　　　　　echo ${file}+++${file1}
　　　　　　flag="1"
　　　　fi
　　　　done
　　if [ $flag != "1" ]
　　then
　　cp -f $1"/"$file $2
　　fi
　　flag="0"
　　done
}
src="/UploadFiles/2021-04-08/src">

第三行：对源文件夹下的文件遍历循环，``会将包含的命令的输出放在相应位置，$1,$2取得是函数的入参
第七行：if条件判断，[ 后有空格，=前后要有空格；=无空格会被认为是赋值
shell脚本里赋值使用的是不带空格的=，条件判断使用的是带空格的=
总结