Kumar Gala wrote:
On Feb 13, 2008, at 5:07 PM, Wolfgang Denk wrote:
In message <Pine.LNX. 4.64.0802131648030.23661@blarg.am.freescale.net> you wrote:
Add a simple expr style command that will set an env variable as the result of the command. This allows us to do simple math in shell. The following operations are supported: &, |, ^, +, -, *, /.
Signed-off-by: Kumar Gala galak@kernel.crashing.org
this was the expr patch, but renamed based on comments on the list.
<grumble> Well, *my* command was *not* to rename it.
sorry, saw your post after I sent this :)
</grumble>
At least, please don't make it a default command, then.
If you are good with calling it expr so am I. I'd prefer not confusing 'setenv' with 'setexpr'. If we call it expr add it to the default list?
- k
OK, time to educate Jerry since I'm too lazy to check myself. Does our hush shell support back ticks? If we have back tick support, or can add that support, we should call it expr and return a value which then gets placed properly. That would be IDEAL. setenv foo `expr 2 + 3`
gvb