noob question regarding variables 1

[Nostradamus]

I want to insert a variable in a set line.

for instance if a have a variable containing usernames $username and a want to set a new variable by inserting the this variable.

set x {/usr/home directories/$username}

When I try this it simply writes it as /usr/home/$username instead of inserting the value of the variable.

Hope you understand what I mean.

how do I do this using tcl?

/Sören

 

[feherke]

Hi

set x [red]"[/red]/usr/home directories/$username[red]"[/red]

Feherke.

http://rootshell.be/~feherke/

 

[Nostradamus]

thanks a bunch.
I was told the {}´s was needed if I had spaces on the line. Obviously they ignore the $-variable. Sadly enough I never tried it with "". noobie question without a doubt, but now it's working.

*star*

/Sören

 

[feherke]

Hi

I found the Tcl/Tk documentations abit strange. My performance is better with differently structured documentations.

This is the part with the solution to your problem :

[4] Double quotes.
[gray](...)[/gray]Command substitution, variable substitution, and backslash substitution are performed on the characters between the quotes as described below.[gray](...)[/gray]

[5] Braces.
[gray](...)[/gray]No substitutions are performed on the characters between the braces except for backslash-newline substitutions described below, nor do semi-colons, newlines, close brackets, or white space receive any special interpretation.[gray](...)[/gray]

http://tcl.tk/man/tcl8.4/TclCmd/Tcl.htm#M8

Feherke.

http://rootshell.be/~feherke/