how to find a file exists in particular dir through SSH

Question

how to find a file exists in particular dir through SSH

for example : host1 and dir /home/tree/TEST

Host2:- ssh host1 - find the TEST file exists or not using bash

Answer 1

ssh will return the exit code of the command you ask it to execute:

if ssh host1 stat /home/tree/TEST \> /dev/null 2\>\&1
then 
  echo File exists
else 
  echo Not found
fi

You'll need to have key authentication setup of course, so you avoid the password prompt.

Answer 2

This is what I ended up doing after reading and trying out the stuff here:

FileExists=`ssh host "test -e /home/tree/TEST && echo 1 || echo 0"`

if [ ${FileExists} = 0 ]
  #do something because the file doesn't exist
fi

More info about test: http://linux.die.net/man/1/test