how can i calculate in c-shell?

[Maurice Skubski]

Hi, i want to make a calculation in c-shell: $v1 - 2 where $v1 is for example 10. how do i write the result in a new variable. thanx for help :)

[Alexander M. Ermes]

Hi there.


export V1="10"
export V2="0"
$V2=`expr $V1 - 2`

Rgds
Alexander M. Ermes

[Volker Borowski]

%setenv V1 4
%setenv RESULT `expr $V1 - 2`
%echo $RESULT
2

Quotes are backwards.

Volker

[Maurice Skubski]

sorry, this is not working :( export error. do i have to define the export command or the variable? i'm not realy good in c-shell. thanx :)

[Volker Borowski]

Maurice,

in the c-shell, you have to use
"setenv VARIABLE value"
with NO equal-sign !

"export VARIABLE=value"
is Bourne or Kornshell Syntax.

Volker

[Maurice Skubski]

hmm, is there a good homepage whith a c-shell tutorial? i think, i have to lern a bit more c-shell. thank you for help :)

[Tom Danzig]

#!/usr/bin/csh

@ v1 = 10
@ z = $v1 - 2
echo $z


The @ sign defines numeric (integer) variables

[Sachin Patel]

set t=1
set t1=5
echo "$t + $t1"|bc

Sachin