Running full commands through remote ssh [duplicat

问题:

This question already has answers here:

Closed 8 years ago.

Possible Duplicate:
how to use ssh to run shell script on a remote machine?

I am trying to make a bash script that runs on my remote server's daily cron jobs to automatically login through ssh to another unix box, run a few commands and then leave.

#!/bin/bash
ssh machinehost.com -l admin -p 2222 "/usr/bin/find /share/Public/backups/set0 -mtime +14 | xargs rm -f;
                               /usr/bin/find /share/Public/backups/set1 -mtime +4 | xargs rm -f;
                               /usr/bin/find /share/Public/backups/set2 -mtime +3 | xargs rm -f;
                               /usr/bin/find /share/Public/backups/set3 -mtime +21 | xargs rm -f;
                               /usr/bin/find /share/Public/backups/set4 -mtime +2 | xargs rm -f;
                               /usr/bin/find /share/Public/backups/set5 -mtime +2 | xargs rm -f;
                               "

The problem I am having is I need to modify my current existing code to do something a little more complicated before each command like

if [ $(ls /share/Public/backups/set1 -1 | wc -l ) -gt 4 ] then run above command
fi

How would I go about running this command on the remote ssh machine and not on my local cron one?

回答1:

Try writing your bash script locally and calling:

ssh [e-mail] 'bash -s' < local_script.sh

(Found in the discussion here)

回答2:

Write a script, copy it to the remote machine and from ssh run just that script.

回答3:

Another workaround is to use python. There is a module called pexpect that can solve your problem, and even more complicated scenario.