NFS Stale Mount Check

[SteveR77]

I am currently working on the logic associated with testing for stale NFS mounts in my environment.

However, I am at a lost as to why the loop in my first case condition only gives me the first value from the file being passed then drops back to the menu options. I am aware that the stale variable currently does not check against anything but it should not keep the looping construct from working.

#!/bin/sh
 
clear
PS3='Select option: '
options=("Stale NFS Clients" "Check Server Stale NFS Mounts" "Quit")
select opt in "${options[@]}"

do
  case $opt in
  "Stale NFS Clients")
  while read line
    do
    ssh root@$line lsof | egrep '/stale/fs|/export/backup' | awk '{print $2;}' | sort -fu | wc -l
    if [ $stale > 0 ]
        then
                   lsof | egrep '/stale/fs|/export/backup' | awk '{print $2;}' | sort -fu 
        else
                    echo "There are no stale NFS mount for $line"
    fi
    done < ExportClients
    ;;
  "Check Server Stale NFS Mounts")
 echo -n "Enter hostname to test for stale NFS mounts: "
 read server
   ssh root@$server lsof | egrep '/stale/fs|/export/backup' | awk '{print $2;}' | sort -fu | wc -l
    if [ $stale > 0 ]
        then
                   lsof | egrep '/stale/fs|/export/backup' | awk '{print $2;}' | sort -fu 
        else
                    echo "There are no stale NFS mount for $server"
    fi
    ;;
   "Quit")
    break
    ;;
    *) echo Invalid Option;;
  esac
done

Thank you for your assistance.



I.T. where a world of choas and confusion comes down to nothing but 1s and 0s.

 

[SteveR77]

Issue with this was I forgot about SSH reading STDIN.

This resolved the issue.

while read line
do
ssh root@"$line" "lsof | egrep '/stale/fs|/export/backup' | awk '{print $2;}' | sort -fu | wc -l" </dev/null


I.T. where a world of choas and confusion comes down to nothing but 1s and 0s.