Thursday, September 29, 2011

Discontinuation of libhid library in Ubuntu 10.10 causes problems

root@router39:~/mesh-svn-repo/LabBrick-Control# ./LabBrickControl
./LabBrickControl: error while loading shared libraries: libhid.so.0: cannot open shared object file: No such file or directory

all you need to do is to copy /usr/local/lib/libhid.so.0 to the node that needs it.

Tuesday, September 20, 2011

How to disable GRUB 2 menu, even after crash.

Just wanted to share this with anyone wanting to know.
If your headless server crashes, GRUB2 (at least on Ubuntu Server) is designed to force the GRUB menu to load up next time it starts up, which means you are locked out of SSH until someone physically makes a kernel selection on the PC.

To prevent this do the following change to your grub.cfg file.

#nano /boot/grub/grub.cfg

You want to find this line and change it:
Code:
if [ ${recordfail} = 1 ]; then
  set timeout=-1
else
  set timeout=10
fi
And change to:
Code:
if [ ${recordfail} = 1 ]; then
  set timeout=3
else
  set timeout=10
fi
Or a number other than -1.

when install new kernel image, the system will update this grub.cfg file. Therefore, you also need to change the /etc/grub.d/00_header, find the following function:


Code:
make_timeout ()
{
    cat << EOF
if [ "\${recordfail}" = 1 ]; then
  set timeout=1
else
  set timeout=${2}
fi
EOF
}
So we need to change "set timeout=-1" to "set timeout=1" as well.

Also, please enable the "auto answering feature" for fsck:
/etc/default/rcS

Quote:
cat /etc/default/rcS
#
# /etc/default/rcS
#
# Default settings for the scripts in /etc/rcS.d/
#
# For information about these variables see the rcS(5) manual page.
#
# This file belongs to the "initscripts" package.

TMPTIME=0
SULOGIN=no
DELAYLOGIN=no
UTC=yes
VERBOSE=no
FSCKFIX=no
it is enough to change FSCKFIX=no => FSCKFIX=yes

Thursday, September 15, 2011

在Modoer2.0中更换为Google地图后修复“地图坐标不正确” 问题

在./data/cachefiles/item_field_1.php里,找“地图坐标不正确”

 4 =>
  array (
    'fieldid' => '5',
    'modelid' => '1',
    'tablename' => 'subject',
    'fieldname' => 'mappoint',
    'title' => '地图坐标',
    'unit' => '',
    'style' => '',
    'template' => '',
    'note' => '',
    'type' => 'mappoint',
    'listorder' => '4',
    'allownull' => '0',
    'enablesearch' => '0',
    'iscore' => '1',
    'isadminfield' => '0',
    'show_list' => '0',
    'show_detail' => '1',
    'regular' => '/[0-9a-z]+,[0-9a-z]+/i',
    'errmsg' => '地图坐标不正确',
    'datatype' => 'varchar(60)',
    'config' =>
    array (
      'default' => '',
      'size' => '30',
    ),
    'disable' => '0',
  ),



'regular' => '/[0-9a-z]+,[0-9a-z]+/i',
改成
'regular' => '/[\-\.0-9a-z]+,[\-\.0-9a-z]+/i',

Wednesday, August 24, 2011

gcc-linaro not found on OpenWRT

--2011-03-29 19:34:17--  http://downloads.openwrt.org/sources/gcc-linaro.tar.bz2
Resolving downloads.openwrt.org... 78.24.191.177
Connecting to downloads.openwrt.org|78.24.191.177|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
2011-03-29 19:34:17 ERROR 404: Not Found.

Download failed.
similar to this
https://forum.openwrt.org/viewtopic.php?id=29329 
 
The reason is OpenWRT build system don't know what version of gcc linaro to use. 
Solve that by going into "make menuconfig" and enabling the following option:
[*] Advanced configuration options (for developers)--->
[*]   Toolchain Options  --->  
GCC compiler Version (gcc 4.5.x with Linaro enhancements)  --->
(X) gcc 4.5.x with Linaro enhancements 
 
 
 

Thursday, July 7, 2011

中国银行网上银行不能输入密码, 解决方法

进入中国银行网站后点击地址栏右边的兼容性视图按钮,再登录网上银行即可。
对于安装64位IE9的机器,在使用网上银行时要启动32位的IE9,因为有些银行(包括中国银行的安全插件是不支持64位的)。启动32位IE9 的方法是在“开始菜单/所有程序”里找。有两上IE,其中一个是Internet Explorer (64位), 另外一个没有注明64位的,即为32位IE9。

Wednesday, April 13, 2011

sorting files according to their names with number

To sort the files in a directory, such as

file_2.txt
file_12.txt
file_43.txt
file_1.txt

ls command will get you, this
file_1.txt
file_12.txt
file_2.txt
file_43.txt

if you want the sorted list to look like
file_1.txt
file_2.txt
file_12.txt
file_43.txt
according to the numeric order, then you need to sort command

ls *.txt | sort -t_ -k2 -n

-t specifies the separator
-k specifies the field id
-n indicates numeric sorting

Wednesday, April 6, 2011

Ubuntu: update-initramfs failed to pass e2fsck check

Error:
update-initramfs: Generating /boot/initrd.img-2.6.32-30-generic-pae
E: /etc/initramfs-tools/hooks/e2fsck failed with return 1.
update-initramfs: failed for /boot/initrd.img-2.6.32-30-generic-pae

Cause:
Missing configuration file for e2fsck in /etc/

Solution:
create a file in /etc/e2fsck.conf with the following content

[options]

RISC-v emulator

Changes are based on https://risc-v-getting-started-guide.readthedocs.io/en/latest/linux-qemu.html For Ubuntu/Debian, in addition to sud...