ipk包是opkg使用的安装包.
我正在尝试提取其中一个的内容,并创建我自己的ipk.
我读过我应该能够解开他们,但事实并非如此.
我试过了:
tar -zxvf mypack.ipk
我得到:
zip: stdin: not in gzip format
我也尝试过:
tar -xvf mypack.ipk
我得到:
tar: This does not look like a tar archive
我发现互联网上关于ipk的大部分信息都是不准确的.
我的ipk是由bitbake生成的.我在使用bitbake时遇到了困难,并希望避免使用它.
关于如何提取以及如何创建ipk文件的任何想法？具有单个包的简单模板将是有用的.
我有一个django 1.7的工作项目,现在我把它移到django 1.8.我可以syncdb用sqlite运行应用程序,但是当我切换到postgres时,它无法执行syncdb:
Creating tables...
Creating table x
Creating table y
Running deferred SQL...
Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "~/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 338, in execute_from_command_line
utility.execute()
File "~/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 330, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "~/venv/lib/python2.7/site-packages/django/core/management/base.py", line 390, in run_from_argv
self.execute(*args, **cmd_options)
File "~/venv/lib/python2.7/site-packages/django/core/management/base.py", line 441, in execute
output = self.handle(*args, **options)
File "~/venv/lib/python2.7/site-packages/django/core/management/commands/syncdb.py", line 25, in handle
call_command("migrate", **options)
File "~/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 120, in call_command
return command.execute(*args, **defaults)
File …使用django 1.8,我观察到一些奇怪的东西.这是我的javascript:
function form_submit(){
var form = $('#form1_id');
request = $.post($(this).attr('action'), form.serialize(), function(response){
if(response.indexOf('Success') >= 0){
alert(response);
}
},'text')
.fail(function() {
alert("Failed to save!");
});
return false;
}
以下是views.py中显示的参数
print request.POST
<QueryDict: {u'form_4606-name': [u''], u'form_4606-parents': [u'4603', u'2231', u'2234']}>
但我无法提取父母:
print request.POST['form_4606-parents']
2234
为什么它只给我最后一个价值？我认为序列化有问题,但我无法弄清楚如何解决这个问题.
我正在尝试获取ec2"用户数据"脚本日志并将其指向Windows上的系统日志.在linux上,有人已经找到了解决方案:http: //alestic.com/2010/12/ec2-user-data-output
基本上你可以将/var/log/user-data.log发送到系统日志.我需要知道如何为Windows实例做这件事.我在我的Windows实例上找不到任何user-data.log.
我正在尝试使用Jenkins上的docker插件来运行现有容器的实例.Docker版本1.6.0,内部版本为4749651
我选择了"创建容器"输入图像名称的图像ID,并尝试了主机http://172.16.42.43:4243并尝试了一个空主机.我一直收到这个错误:
ERROR: Build step failed with exception
java.lang.NullPointerException: uri was not specified
at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:204)
at com.github.dockerjava.core.DockerClientConfig$DockerClientConfigBuilder.withUri(DockerClientConfig.java:406)
at org.jenkinsci.plugins.dockerbuildstep.DockerBuilder$DescriptorImpl.createDockerClient(DockerBuilder.java:123)
at org.jenkinsci.plugins.dockerbuildstep.DockerBuilder$DescriptorImpl.getDockerClient(DockerBuilder.java:201)
at org.jenkinsci.plugins.dockerbuildstep.DockerBuilder.perform(DockerBuilder.java:71)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:779)
at hudson.model.Build$BuildExecution.build(Build.java:205)
at hudson.model.Build$BuildExecution.doRun(Build.java:162)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:537)
at hudson.model.Run.execute(Run.java:1744)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at hudson.model.ResourceController.execute(ResourceController.java:98)
at hudson.model.Executor.run(Executor.java:374)
Build step 'Execute Docker container' marked build as failure
有人能告诉我如何解决它吗？此外,如果有人之前使用过这个插件,请告诉我这是否有用过.
还尝试了"执行docker container" - >使用指定的容器id启动容器导致相同的错误.
另一种方法:我尝试使用Execute shell插件,我收到此错误:
+ docker start d023eec1ff34
Post http:///var/run/docker.sock/v1.18/containers/d023eec1ff34/start: dial unix /var/run/docker.sock: permission denied. Are you trying to connect to a TLS-enabled daemon without …使用django 1.7.7我想使用django的迁移来添加或删除字段.所以我修改了model.py并运行了
python manage.py makemigrations myproj
Migrations for 'myproj':
0001_initial.py:
- Create model Interp
- Create model InterpVersion
python manage.py migrate myproj
Operations to perform:
Apply all migrations: myproj
Running migrations:
Applying myproj.0001_initial... FAKED
python manage.py runserver
然后检查管理页面,它没有更新.然后我尝试删除迁移文件夹并再次尝试; migrate命令表示没有要应用的迁移.
我该如何进行迁移？注意:我想使用django迁移的新技术而不是旧的南方法.
我正在使用NVD3库根据Rails控制器中生成的数据制作简单的折线图.我用来在Rails中生成数据的代码是:
task.task_values.each do |u|
array.push({ :x => u.created_at.to_i * 1000, :y => u.value.to_i })
end
data_label = task.name + " ("+ task_unit +")"
taskValuesList = [{:key => data_label, :values => array}]
data = {:type => "line", :data => taskValuesList}
然后,在我看来,我有以下JS代码:
nv.addGraph(function() {
var chart = nv.models.lineChart()
.x(function(d) { return d.x; })
.y(function(d) { return d.y; });
chart.xAxis
.showMaxMin(false)
.tickFormat(function(d){return d3.time.format("%m/%d/%y")(new Date(d));});
chart.yAxis
.tickFormat(d3.format(',d'));
d3.select('#chart<%= i %> svg')
.datum(data.data)
.transition().duration(500)
.call(chart);
nv.utils.windowResize(chart.update);
return chart;
});
图表正确呈现,但是当我尝试鼠标悬停数据点以显示工具提示时,我收到错误"Uncaught TypeError:无法读取属性'x'未定义"
我遇到一个问题,当我ssh到另一台机器时,我的paramiko ssh会话看不到与我手动ssh到机器时相同的系统路径.这是我的python代码:
cmd = "echo $PATH"
try:
ssh.connect(ip, username=username, password=password)
except Exception as ex:
raise Exception("Failed to connect to %s with credentials username='%s' password='%s' %s" \
% (ip, username, password, ex.message) )
ssh_stdin, ssh_stdout, ssh_stderr = ssh.exec_command(cmd)
output = ssh_stdout.read()
输出显示/ usr/bin:/ bin但是当我手动ssh到机器时,系统PATH上还有其他几个路径.请帮忙.
我正在使用django 1.8.我在django admin中显示了一个多对多的字段,就像这个例子一样.
class PurchaseOrder(models.Model):
product = models.ManyToManyField('Product')
vendor = models.ForeignKey('VendorProfile')
dollar_amount = models.FloatField(verbose_name='Price')
class Product(models.Model):
products = models.CharField(max_length=256)
def __unicode__(self):
return self.products
class PurchaseOrderAdmin(admin.ModelAdmin):
fields = ['product', 'dollar_amount']
list_display = ('get_products', 'vendor')
def get_products(self, obj):
return "\n".join([p.products for p in obj.product.all()])
问题是如果我每页显示100行,它会进行100次查询.对于外键,有一个神奇的list_select_related,但你不能在那里放置多对多字段.如何避免重复查询？
---更新:
我试过了:
def get_queryset(self, request):
qs = super(PurchaseOrderAdmin, self).get_queryset(request)
return qs.prefetch_related('products')
它仍在每行执行重复查询.
我正在尝试调整django 1.8 admin的多对多字段.
models.py
from django.db import models
class Material(models.Model):
type = models.CharField(max_length=20, primary_key=True)
def __unicode__(self):
return self.type
class Pen(models.Model):
label = models.CharField(max_length=20, blank=True, default='')
materials = models.ManyToManyField(Material)
admin.py
from django.contrib import admin
from django.conf.urls import url
from .models import *
from django.forms import SelectMultiple
@admin.register(Pen)
class PenAdmin(admin.ModelAdmin):
filter_horizontal = ('materials',)
#formfield_overrides = { models.ManyToManyField: {'widget': SelectMultiple(attrs={'size':'5', 'width': '50px', 'style': 'width:50px'})}, }
def get_form(self, request, obj=None, **kwargs):
form = super(PenAdmin, self).get_form(request, obj, **kwargs)
form.base_fields['materials'].widget.attrs['style'] = 'width: 70px;'
return form
class …