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2012-12-04
, 19:23
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Community Council |
Posts: 4,920 |
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Joined on May 2012
@ Southerrn Finland
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#2
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quickly trying this in N9 at least it works...
~ #
~ # oneh=100 ; getcurrent=123 ; timeshundred=$(($getcurrent*$oneh)) ; echo $timeshundred
12300
~ #
So it seems that N900 has different shell... What does it give as an answer there?
~ #
~ # oneh=100 ; getcurrent=123 ; timeshundred=$(($getcurrent*$oneh)) ; echo $timeshundred
12300
~ #
So it seems that N900 has different shell... What does it give as an answer there?
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2012-12-04
, 19:29
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Moderator |
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Joined on Nov 2011
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#3
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Originally Posted by juiceme
works on the n900 too:
quickly trying this in N9 at least it works...
~ #
~ # oneh=100 ; getcurrent=123 ; timeshundred=$(($getcurrent*$oneh)) ; echo $timeshundred
12300
~ #
So it seems that N900 has different shell... What does it give as an answer there?
Code:
/home/user # oneh=100 ; getcurrent=123 ;timeshundred=$(($get current*$oneh)) ; echo $timeshundred 12300 /home/user #
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2012-12-04
, 19:49
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Community Council |
Posts: 4,920 |
Thanked: 12,867 times |
Joined on May 2012
@ Southerrn Finland
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#4
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Okaay, then there is no other possibility than for some reason $getcurrent does not evaluate to a number.
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2012-12-04
, 19:53
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Posts: 1,163 |
Thanked: 1,873 times |
Joined on Feb 2011
@ The Netherlands
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#5
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Did you try the same script in bash? There are some minor differences between ash and bash 
Try to run the script from bash, need to have bash3 (packagename) installed though.
Try to run the script from bash, need to have bash3 (packagename) installed though.
__________________
N900 loaded with:
CSSU-T (Thumb)
720p recording,
Pierogi, Lanterne, Cooktimer, Frogatto
N9 16GB loaded with:
Kernel-Plus
--
[TCPdump & libpcap | ngrep]
--
donate
N900 loaded with:
CSSU-T (Thumb)
720p recording,
Pierogi, Lanterne, Cooktimer, Frogatto
N9 16GB loaded with:
Kernel-Plus
--
[TCPdump & libpcap | ngrep]
--
donate
| The Following User Says Thank You to mr_pingu For This Useful Post: | ||
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2012-12-04
, 20:53
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Posts: 50 |
Thanked: 120 times |
Joined on Apr 2010
@ Poland
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#6
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No idea why it wouldn't work. Maybe try replacing timeshundred formula with $(expr $oneh \* $getcurrent) ?
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.:different kinds of pop
.:different kinds of pop
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2012-12-04
, 21:22
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Posts: 2,292 |
Thanked: 4,135 times |
Joined on Apr 2010
@ UK
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#7
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Originally Posted by thedead1440
Okay so a completely fresh script on the N900 in question with the above works.
works on the n900 too:
Code:/home/user # oneh=100 ; getcurrent=123 ;timeshundred=$(($get current*$oneh)) ; echo $timeshundred 12300 /home/user #
So is there something I have done further back in the script that is effecting it?
I have tried "let" and "expr" style claculations with the same results.
I also originally tried just putting "$getcurrent*100" and got the issue.
Installing bash now to see if it makes a difference.
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2012-12-04
, 21:36
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@ UK
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#8
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Originally Posted by mr_pingu
Bash3 installed.
Did you try the same script in bash? There are some minor differences between ash and bash
Try to run the script from bash, need to have bash3 (packagename) installed though.
Changed to #!/bin/bash
Works a treat, thank you.
Is this a bug in ash/busybox?
Is there another way of doing this so my application doesn't depend on bash3?
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2012-12-04
, 21:52
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Thanked: 1,873 times |
Joined on Feb 2011
@ The Netherlands
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#9
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Not a bug of busybox, more of a feature which most of us don't like. Remember busybox is written in mind to be used on embedded devices so basically it's a stripped down version of bash.
It would probably possible to rewrite without the dependence on bash but then you should knock on somebody else door. I am not a good coder/scripter.
It would probably possible to rewrite without the dependence on bash but then you should knock on somebody else door. I am not a good coder/scripter.
__________________
N900 loaded with:
CSSU-T (Thumb)
720p recording,
Pierogi, Lanterne, Cooktimer, Frogatto
N9 16GB loaded with:
Kernel-Plus
--
[TCPdump & libpcap | ngrep]
--
donate
N900 loaded with:
CSSU-T (Thumb)
720p recording,
Pierogi, Lanterne, Cooktimer, Frogatto
N9 16GB loaded with:
Kernel-Plus
--
[TCPdump & libpcap | ngrep]
--
donate
| The Following User Says Thank You to mr_pingu For This Useful Post: | ||
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2012-12-04
, 22:08
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Posts: 2,292 |
Thanked: 4,135 times |
Joined on Apr 2010
@ UK
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#10
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Originally Posted by mr_pingu
Seems odd to make it calculate a simple multiplication incorrectly. I can understand stripping commands to make a lightweight version. Making commands not work correctly is plain stupid IMO.
Remember busybox is written in mind to be used on embedded devices so basically it's a stripped down version of bash.
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The issue is that on my N900 the multiply command on line 47 doesn't multiply correctly.
It however seems to work fine on my Ubuntu desktop which is puzzling me.
I have tried multiple methods to calculate but it just isn't correct.
I am trying to multiply a value by 100 (to get percent) and you can clearly tell that it isn't doing so.
The script is to calculate swap de-fragmentation without needing iostat
Any help will be greatly appreciated. Thanks
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Last edited by sixwheeledbeast; 2012-12-04 at 21:39.