insert output of sed into a variable
 

Hi,

This is a shell-related question.

I would like to insert the ip address of the current x-server into a variable. If the Xdmcp-server and x-server are not the same computer, it looks like $DISPLAY gives <ip-adress>:<display-id> . for example: 192.168.0.31:0.0

Is it possible to remove the ':0.0' from $DISPLAY (probably with sed) and insert it into a new variable, like $DISPLAYHOST?

I allready searched the web for it, but I can't find any solution.

(I would like to run programs on the x-server while having a display of a different computer)


Thanks in advance

You can convert the output of any shell command or pipeline to a string by using backquotes (`).

For example, say you wanted to use some l33t encryption on some data, then send it to a variable for later use.

I'm not exactly clear on why you want to do this particular thingy, but whatever, I'll tell you how you could do it. Use cut, not sed.

This sets $DISPLAYHOST to the first colon-delimited field of $DISPLAY.

That worked .

THank you very much!

Greetings Hendrik

There are several way to do many things. Such a simple variable substitution could be done in bash.
export $DISPLAYHOST="${DISPLAY%:*}"

If you wanted the DISPLAY#.SCREEN part:
export $DISPLAYHOST="${DISPLAY#*:}"