Assorted hints, that makes the life easier in the daily life with Linux. Some are noted here in order to remember the exact systax of the construct.
Create a file remotely
If you need to let output from one command locally be the input to a file on a remote system issue this command:
<local command>|ssh <remote username>@<remote host> "cat > <remotefilename>"
xmodmap -pke|ssh -p 2222 email@example.com "cat > .Xmodmap"
the output (on stdout) will be sent to bren using klausk's login and send the result into the file .Xmodmap
Comparing two files
In general comparing two files can be done like this:
diff <firstfile> <secondfile>
or using vim
vim -d <firstfile> <secondfile>
To compare two files of which one resides on another system issue this command:
vim -d <firstfile> scp://<remote-system>//<path-to-file>/<secondfile>
To compare two files both resident on different systems issue this command:
vim -d scp://<first-remote-system>//<path-to-file>/<firstfile> scp://<second_remote-system>//<path-to-file>/<secondfile>
where <remote-system> is either the IP address or its hostname including domain as in bren.hih.au.dk - if using a different username than the one you're logged in with on current system use <username>@<remote-system>
After updating the free-nx server it might be necessary to run
to reinstall the configuration.