Question

我需要有关如何在shell脚本的while循环中通过ssh命令连接远程系统的帮助。我能够使用shell脚本中的ssh连接一个远程系统。请查看下面给出的示例代码段...... ..

ssh "root@148.147.179.100" ARG1=$rpmFileName 'bash -s' <<'ENDSSH'        
  echo ">>Checksum ..."
  md5sum /root/$ARG1
ENDSSH

当试图在循环中运行相同的代码时出现错误“语法错误：意外的文件结束”，这是我无法解决的。

但是当将相同的代码放在另一个脚本文件中并在另一个脚本的while循环中使用该文件时，正在工作。

任何人都可以帮我解决一些问题。

请查看下面给出的完整代码......

#!/bin/sh
rpmFileName=""
file="serverIps.txt"
dir="/home/rtulluri/downloads/EVAT-1123/AxisTar";
numberOfIps=0
axisTarfileTarget='/var'
#This function checks whether given ip is valid  or not
#returns 0 for valid ip, 1 for invalid ip
function valid_ip()
{
    local  ip=$1
    local  stat=1
    if [[ $ip =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]
    then
        OIFS=$IFS
        IFS='.'
        ip=($ip)
        IFS=$OIFS
        [[ ${ip[0]} -le 255 && ${ip[1]} -le 255 \
            && ${ip[2]} -le 255 && ${ip[3]} -le 255 ]]
        stat=$?
    fi
    #echo "stat = $stat"
    return $stat
}
#Check whether given file exists or not
if [ -s $file ]
then
 echo "$file exists"
else
  echo "$file doesn't exist"
  echo "exiting ........"
  exit
fi
IFS=,
echo "---------------"
while read sysType serverIp uid pwd
do

  sysType="${sysType#"${sysType%%[![:space:]]*}"}"   # remove leading whitespace characters
  sysType="${sysType%"${sysType##*[![:space:]]}"}"   # remove trailing whitespace characters
  serverIp="${serverIp#"${serverIp%%[![:space:]]*}"}"   # remove leading whitespace characters
  serverIp="${serverIp%"${serverIp##*[![:space:]]}"}"   # remove trailing whitespace characters

  uid="${uid#"${uid%%[![:space:]]*}"}"   # remove leading whitespace characters
  uid="${uid%"${uid##*[![:space:]]}"}"   # remove trailing whitespace characters

  pwd="${pwd#"${pwd%%[![:space:]]*}"}"   # remove leading whitespace characters
  pwd="${pwd%"${pwd##*[![:space:]]}"}"   # remove trailing whitespace characters

  if [ -n "$serverIp" ]
  then
     valid_ip $serverIp
     #Assign the return value to a variable
     isValidIp=$?
   else
      isValidIp=1
  fi

  if [ $isValidIp -eq "0" ]
    then
       numberOfIps=$(( $numberOfIps + 1 ))
       echo "$numberOfIps) $serverIp --> is valid"     

       if [ "$sysType" = "ebox" ]
       then
               echo "$serverIp is an eBox device.."
           echo "About to pass $serverIp as argument to connct.sh"
           #./connct.sh $serverIp
           ssh "$address" ARG1=$rpmFileName 'bash -s' <<'ENDSSH'
        echo ">>Checksum ..."
           ENDSSH
        fi
    else
       echo "$serverIp --> is invalid"
    fi    
    echo ""
done < $file

Answer 1

您可以尝试使用'-n'ssh开关

e.g：

for i in {1..7}
do
    ssh -n myhost$i mycommand
done

在shell脚本循环中需要有关ssh用法的帮助

1 个答案: