while 循环从两列中读取数据

Question

根据我在 shell 脚本中使用 while 循环的有限经验，我需要检查新公钥中的远程主机连接。

cat JOBID_LIST.txt
HLC00101 abc@gbl67543.cloud.uk.hlc
HLC01110 absit@DEU010A.cloud.uk.hlc
HLC02568 abftp@GTB19494.systems.uk.hlc
HLC02590 wbsftp@batch.mose.dev.cloud.hlc
HLC02590 cmul1u11@batch.mose.dev.cloud.hlc
HLC02648 dmlfeat@lmd-fileserver-uat.systems.uk.hlc
HLC02648 dmsftp@lmd-fileserver-uat.systems.uk.hlc


#!/bin/bash
cat JOBID_LIST.txt | while read -r JOBID SFTPHOST
do
   if [[ ${JOBID} != "HLC02648" ]]; then
        ssh -q -o BatchMode=yes -o StrictHostkeyChecking=no ConnectTimeout=5 "$SFTPHOST" -i xxxx.pub 'exit 0'
    
           if [[ $? == 0 ] ; then
                echo "Connect to $SFTPHOST in $JOBID in new pubkey successfully."
            else
                echo "Failed to connect to $SFTPHOST in $JOBID in new pubkey "
            fi
   else
     echo "Verify Completely"
     exit 2.
   fi
done

由于某种原因，ssh 命令跳出了 while 循环，因此直到最后的第三个 JOBID 被忽略。 我怎样才能让它检查到文件末尾？ 感谢您的建议。

Answer 1

也许在 ssh 调用之前添加 </dev/null 会有所帮助？

#!/bin/bash

while read -r JOBID SFTPHOST; do
   if [ "$JOBID" != "HLC02648" ]; then
      </dev/null \
      ssh -q -o BatchMode=yes -o StrictHostkeyChecking=no \
          ConnectTimeout=5 "$SFTPHOST" -i xxxx.pub 'exit 0'
      if [ $? = 0 ]; then
         echo "Connect to $SFTPHOST in $JOBID in new pubkey successfully."
      else
         echo "Failed to connect to $SFTPHOST in $JOBID in new pubkey "
      fi
   else
      echo "Verify Completely"
      exit 2
   fi
done < JOBID_LIST.txt