String concatenation with "hostname" in batch script (how to put output of "hostname" into a variable)

Question

When I enter "hostname" into the Windows Command Prompt, I get the expected hostname of the system, but I can't seem to include it in any string output, either assigned to another variable, or just as itself.

The below script outputs "Ready to copy to Server of Is this the correct location?" and all variations of using hostname seem to result in the same.

@echo off 
set hostnamevar=%hostname%
set "greeting1=Ready to copy to Server of "
set "greeting2=Is this the correct location?"
set "greeting=%greeting1%%hostnamevar%%greeting2%"
echo %greeting%
pause

Try for /f %%A in ('hostname') do set hostname=%%A. The hostname program is not an environment variable. This is one way to run the program and set the output as a variable. Every time I see code like this I'm reminded why I use Bash, even in Windows. — paddy
– paddy, Commented Sep 15, 2015 at 3:41
to understand, what is hostname here? a command? a variable? hostname /? give command unknown even with echo %hostname% but if I type hostname on console, it show a weird output. Server : UnKnown Address: 2001:4860:4860::8888 — Paul
– Paul, Commented Sep 15, 2015 at 3:47
Actually this post is very similar to this one (the second code snippet)... — aschipfl
– aschipfl, Commented Sep 15, 2015 at 12:41
Oh wait, my cmd was stuck in nslookup command, this is why the hostname command was not recognized, sorry. (I will remove all my comments in a short time) — Paul
– Paul, Commented Sep 15, 2015 at 18:18

Potato Head · Accepted Answer · 2015-09-15 04:36:00Z

2

Here, hostname is set as an environment variable now.

@ECHO OFF
FOR /F %%H IN ('hostname') DO SET hostnamevar=%%H
SET Greeting=Ready to copy to Server of "%hostnamevar%" Is this the correct location?
ECHO %Greeting%
PAUSE

A little note, on this section, SET Greeting=Ready to copy to Server of "%hostnamevar%" Is this the correct location? you don't need the encapsulating "" around %hostnamevar%

answered Sep 15, 2015 at 4:36

Potato Head

1431 silver badge8 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

David Metcalfe Over a year ago

Not sure I follow on your comment. If the encapsulating quotations around %hostnamevar% aren't necessary, then why have them?

Potato Head Over a year ago

Just me being me in all honesty, if that were my code, I like my eye to be drawn to the variable just for verification that the variable is in fact changing. but the code will execute proper with simply inserting %hostnamevar% where ever you want, if you wanted to you could set the title of the batch window to the hostname. TITLE %hostnamevar%

Collectives™ on Stack Overflow

String concatenation with "hostname" in batch script (how to put output of "hostname" into a variable)

1 Answer 1

2 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related