expr usage (was: Need info.....ugent....)

[Eric Blake]

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According to vimal raj on 3/2/2009 9:02 AM:

Hello Vimalraj,

> case $op in
> 1) expr '$c=$a+$b';;

expr requires each and every token to be a separate argument.
Additionally, it looks like you want to assign the shell variable c to the
result of that expression.  You want to write something like this instead:

c=`expr "$a" "*" "$b"`

or, if you are using a POSIX-compliant shell that supports $(()):

: $(( c = $a * $b ))

> 1. How to install the 'C' Compiler through CD?

Ask that to your local Ubuntu user's group; the GNU coreutils project does
not maintain a C compiler.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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