我在代码中运行这个公式有困难,简单地说,我试图通过for循环来模拟这种情况发生的1000 times.The,希望把TF的时间加起来是真的,TS是真的。我得到了一个错误,我丢失了一个真/假语句,并尝试重新工作的函数,但仍然很卡住了。如有任何帮助或建议,将不胜感激。
#Parameters
c=0.10 #colonization rate
A=10 #Area of all islands(km^2)
d=100 #Distance from host to target (A-T)
s=0.5 #magnitude of distance
d0=100 #Specific &
我试图在我的amd64 Ubuntu16.04系统上安装doxygen和libpcl,这两个包都可以在https://packages.ubuntu.com/xenial/上找到。
这也发生在其他软件包,如智能和突触。我一直在用这样的命令来做这件事;
sudo apt-get install doxygen
的产出;
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package doxygen is not available, but is re
我正在尝试安装g++.But,但做不到。
amol@amol-System-Product-Name:~$ sudo apt-get install g++
[sudo] password for amol:
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages ha
数独apt的更新失败了,ubuntu18.04。
E: Release file for http://in.archive.ubuntu.com/ubuntu/dists/bionic-updates/InRelease is not valid yet (invalid for another 11h 10min 58s). Updates for this repository will not be applied.
E: Release file for http://in.archive.ubuntu.com/ubuntu/dists/bionic-backports/InRel
我已经从14.04升级后卸载了葡萄酒,现在它已经不能安装了:
sudo apt install wine1.6
[..]
The following packages have unmet dependencies:
wine1.6 : Depends: wine1.6-i386 (= 1:1.6.2-0ubuntu14)
Recommends: fonts-droid but it is not installable
E: Unable to correct problems, you have held broken packages.
当我跟踪这个问题时,看起
当我检查后缀版本时
postconf -d | grep mail_version
我得到的输出是
mail_version = 2.11.0 milter_macro_v = $mail_name $mail_version
但是当我运行apt-get install postfix时,它会返回“后缀已经是最新版本”。
我的sources.list内容:
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http
我是Ubuntu的新手,我遇到了一个无法打开软件中心的问题。在我屏幕的右上半部分,有一个带有水平白线的红色点。点击它的时候写在下面;
Error opening the cache
E:Malformed line 56 in source list/etc/apt/sources.list(dist parse),
E: the list of sources could not be read
我应该做些什么来克服这个问题呢?
更新:我尝试了更新,得到的是:
E: Malformed line 56 in source list /etc/apt/sources.list (dist pa
我在谷歌上搜索了几个小时,似乎找不到一个官方的资源库.
## main & restricted repositories
deb http://us.archive.ubuntu.com/ubuntu/ precise main restricted
deb-src http://us.archive.ubuntu.com/ubuntu/ precise main restricted
deb http://security.ubuntu.com/ubuntu precise-security main restricted
deb-src http://security.ubunt
以下是错误输出:
**W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/trusty-security/main/source/Sources 404 Not Found [IP: 91.189.92.152 80]
W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/trusty-security/main/binary-amd64/Packages 404 Not Found [IP: 91.189.92.152 80]
W: Failed to fetch
22.04
系统更新程序刚刚说:“以下软件包将被删除:fwupd签名(1.44+1.2-3),以便安装(整吨软件包)。”
我会暂时拒绝这一点,直到我得到一些确认这是推荐的。另一个线程建议禁用该服务,而不是卸载软件包,但这是Ubuntu18.xx。
所以我会暂时拒绝,直到我确认这是推荐的.对删除以后可能需要的东西有点紧张。
编辑:以下建议如下:
$ apt upgrade -s
NOTE: This is only a simulation!
apt needs root privileges for real execution.
Keep also in mind t
在一个新的Ubuntu12.10系统上,我正在尝试安装Mozart (http://www.mozart-oz.org/)编程环境。不幸的是,我得到了以下错误消息,报告缺少依赖项。
>> sudo apt-get -f install mozart mozart-doc mozart-stdlib
Reading package lists... Done
Building dependency tree
Reading state information... Done
mozart-doc is already the newest version.
Some p
我只是想安装virtualbox
apt-get install virtualbox
出现在我的乌本图上:
The following packages have unmet dependencies:
perl-base : Breaks: debconf (< 1.5.61) but 1.5.58ubuntu1 is to be installed
Breaks: debconf:i386 (< 1.5.61)
E: Error, pkgProblemResolver::Resolve generated breaks, this may be c