Linux – How to ensure that SSH remote BASH shell includes all PATH elements

bashcommand linelinuxssh

So I'm trying to run a script remotely on ssh such as ssh remote "~/bin/some_script.sh" however the problem is that the script runs a command vcs that seems to not load when I try to just send the command via ssh, as opposed to ssh'ing into the remote and manually executing the command.

For clarity, the following output apears when I try

$ ssh remote "cd/...; vcs -x -...;"
bash: vcs: command not found

but it works when I do

$ ssh remote
remote$ vcs -x -...
remote$ //good output

I looked more into it and when I simple run

$ ssh remote "compgen -c | wc -l"
2611

$ ssh remote
remote$ compgen -c | wc -l
3735

So clearly there are a lot of commands not being "loaded" when I just pass commands via ssh vs when I actually ssh into remote and execute commands. Any idea what is happening and how to overcome this?

Best Answer

This has been asked and answered many times elsewhere, including:

and many others. I think the first one is the best answer I found in a few seconds of looking

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Linux – ssh without password from a bash script

ssh -i selects a file from which the identity (private key) or public key authentication is read.

You could configure ssh to use it in your config for this host so you do not have to specify it.

Add to ~/.ssh/config (replace server.example.com with hostname or IP of your server):

Host server.example.com
    User username
    Hostname server.example.com
    PreferredAuthentications publickey,password
    IdentityFile ~/.ssh/id_rsa.pub

This config will make your connection to always try to use id_rsa.pub key and then fallback to password if key would not be available for some reason.

So now you should be able to use ssh <user>@<host> <command> with it automatically using your private key for authentication.

Best Answer

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Linux – ssh without password from a bash script

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