execute part of shell script on remote machine

Question

I am logging into remote machine through shell script (by placing ssh command in script). After ssh command ,The remaining lines of the script are getting executed on the curre

Answer 1

Use ssh command with -t options. For example:

ssh -t myremotehost 'uptime'
name@myremotehost's password: 
10:14:14 up 91 days, 21:20,  5 users,  load average: 0.20, 0.35, 0.36

Answer 2

Is your login passwordless.

If yes, you can just use pipe to execute the statement on the remote machine

like:

cat myshellscript.sh | ssh blah@blah.com -q

Answer 3

One possible solution would be to use a heredoc as in the following example:

$ ssh example.foo.com -- <<@@
> ls /etc/
> cat /etc/passwd
> @@

Basically everything between the @@ on the first line and the last line will be executed on the remote machine.

You could also use the contents of a file by either reading the contents of the file into a variable:

$ MYVAR=`cat ~/foo.txt`
$ ssh example.foo.com -- <<@@
> $MYVAR
> @@

or by simply performing the same action inside the heredoc:

$ ssh example.foo.com -- <<@@
> `cat ~/foo.txt`
> @@

Answer 4

ssh -t user@remotehost 'uptime' user@remotehost's password: 23:35:33 up 2:05, 3 users, load average: 0.79, 0.52, 0.60 Connection to remote closed.

When you specify -t, it opens the terminal in remote machine and execute the command.