how can add two variables?

[mariano_4]

Example:

in the next scrip i have the next script:

-----------------------------------------
#Progrma que calcula el total de memoria #utilizada

ps aux |cut -b 34-37 |grep K | awk '{s=s+$1}\{r=s/1024}END{print r,export $r}'

ps aux | cut -b 34-37 | grep M | awk '{t=t+$1}\END{print t}'

-----------------------------------------

but i need sum both and print the result
how can doing it?

thanks

[harry d brown jr]

Mariano,

TIMEOUT


export $r ???

Might work in LINUX but not in any UNIX that I know of, UNLESS you plan on installing GNU's AWK!


Now, how to do it:

ps aux | cut -b 34-37 | grep -e K -e M |
awk '{lenofvar=length($1);
if (substr($1,lenofvar,1) eq "K") {s=s+$1;r=s/1024}
if (substr($1,lenofvar,1) eq "M") {t=t+$1}
}
END{printf "%d/n",r;
print t}'

Can't test it, but looks good???



live free or die
harry

[harry d brown jr]

I'd like you to take a look at this thread. It helps you and everyone else in the future:

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x022718276953d61190040090279cd0f9,00.html

And I'd like to add that you need to be more interactive with your thread so that people know what works and what doesn't.


live free or die
harry

[Frank Slootweg]

First you have to assign the output to the variables, then add them, then print the sum.

Assign:
variable=`command`
or
variable=$(command)

Add:
((result=$var1+$var2))

Print:
echo $result

[Allan Pincus]

Postscript to Frank's email:

((result = var1 + var2))

or

let result=var1+var2

are also both acceptable.

-Allan

[Martin Johnson]

Harry,

Nicely, put! You are getting more diplomatic in your old age? Or are you getting tired of the flaming tirades?

:-)
Marty