How to SSH to remote server and check if file exists?

How to SSH to remote server and check if file exists?

Show Threads . Show Posts I am trying to figure out a way to ssh to remote server and check if file exists, and if it doesn’t I want to leave the script with an exit status of 5. works, as when I do this manually, the results are returned to the screen. Does anyone have any suggestions or am I just going about this in completely the wrong way?

How to test if a file check in remote server and if statement?

The wonky quoting ensures that the $SSHPATH and $ID is expanded by the local shell, while “$1” is expanded remotely. This would give you an exit status of zero (“success”) if the pattern matched an existing name, and non-zero (“failure”) if it did not (or if ssh failed in some manner).

How to check the SSH connection in Bash?

EDIT: Another approach would be to use nmap (you won’t need to have keys or login-stuff): But you’ll have to grep the message (nmap does not use the return-value to show if a port was filtered, closed or open). If you’re interested in the actual state of the ssh-port, you can substitute grep open with egrep ‘open|closed|filtered’:

How to test something on a remote host?

For your case, you don’t want to use test directly, you want to test something on the remote host. So try something like: The above will run the echo command on the machine you’re running the ssh command from.

How to list all files and directories in SSH?

In order to list all files and directories using an SSH client, you would need to execute the appropriate command. The command name, in this case, is ls and it accepts various parameters.

How to check if a file exists in Linux?

The then branch is taken if that thing returns 0, the else branch otherwise. [ isn’t syntax, it’s the test program (check out ls /bin/ [, it actually exists, man test for the docs – although can also have a built-in version with different/additional features.) which is used to test various common conditions on files and variables.

How to check if a file is in a file list?

It displays is in 3 tab separated columns: And you can pass -1, -2, and -3 options to remove the corresponding column. So above, it will only report the first column: the lines that are in the file list, but not in the output of ls ( ls does sort the file list by default, we assume file names in there don’t contain newline characters).

What to do if SSH directory is not created?

To fix your problem, you can either ssh to some other location: ssh [email protected]. and accept new key – it will create directory ~/.ssh and known_hosts underneath, or simply create it manually using. mkdir ~/.ssh chmod 700 ~/.ssh. Note that chmod 700 is an important step!

Why do I get error CD ~ /.SSH?

But the .ssh directory is not created so when I use cd ~/.ssh I get this error: Is there a step missing ? Should the .ssh dir be created when I use the ssh-keygen command?

Is there a command to generate a SSH key pair?

No. This command generates an SSH key pair but will fail if it cannot write to the required directory: % ssh-keygen Generating public/private rsa key pair.