在做RNAseq时，安装BiomaRt出现了问题，参考了biomaRt包的安装，却又在安装httr的时候发现安装不了
}httr}9IYY.png
如图
首先要感谢我的同学！！！一步一步带我解决！！感动！！！
所以就
$ cd /etc/apt
#可能无法保存，所以需要获得root权限
$ sudo vi sources.list
# 把下面这一行添加到文件里，:wq保存
$ deb https://mirrors.tuna.tsinghua.edu.cn/CRAN/bin/linux/ubuntu/ bionic-cran35/
#如果下面的命令无法执行，就加一个sudo
$ (sudo) apt-get install update
$ (sudo) apt-get install r-base
$ (sudo) apt-get r-base-dev
$ sudo apt-get --purge remove r-base
$ sudo apt-get --purge remove r-base-core
$ sudo apt-get --purge remove r-base-dev
$ sudo apt-get update
出现如下提示
Reading package lists... Done
W: GPG error: https://mirrors.tuna.tsinghua.edu.cn/CRAN/bin/linux/ubuntu bionic-cran35/ InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 51716619E084DAB9
E: The repository 'https://mirrors.tuna.tsinghua.edu.cn/CRAN/bin/linux/ubuntu bionic-cran35/ InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
$ sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 51716619E084DAB9
#再次update
$ sudo apt-get update
出现如下代码
Hit:1 http://cn.archive.ubuntu.com/ubuntu bionic InRelease
Get:2 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB]
Hit:3 http://cn.archive.ubuntu.com/ubuntu bionic-updates InRelease
Get:4 http://cn.archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB]
Get:5 https://mirrors.tuna.tsinghua.edu.cn/CRAN/bin/linux/ubuntu bionic-cran35/ InRelease [3,626 B]
Get:6 https://mirrors.tuna.tsinghua.edu.cn/CRAN/bin/linux/ubuntu bionic-cran35/ Packages [69.5 kB]
Fetched 233 kB in 12s (19.4 kB/s)
Reading package lists... Done
$ sudo apt-get install r-base
apt-get r-base.PNG
$ sudo apt-get install r-base-core
$ sudo apt-get install r-base-dev
都出现了
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 18 not upgraded.
按她说的，输入
$ sudo apt autoremove
然后就会出现
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
cdbs debhelper dh-autoreconf dh-strip-nondeterminism dh-translations intltool jq libarchive-cpio-perl
libfile-stripnondeterminism-perl libfile-which-perl libjq1 libmail-sendmail-perl libonig4 libsys-hostname-long-perl po-debconf
python3-scour scour
0 upgraded, 0 newly installed, 17 to remove and 18 not upgraded.
After this operation, 4,046 kB disk space will be freed.
Do you want to continue? [Y/n] Y
(Reading database ... 167614 files and directories currently installed.)
Removing cdbs (0.4.156ubuntu4) ...
Removing dh-translations (138.18.04.1) ...
Removing intltool (0.51.0-5ubuntu1) ...
Removing jq (1.5+dfsg-2) ...
Removing libarchive-cpio-perl (0.10-1) ...
Removing libfile-which-perl (1.21-1) ...
Removing libjq1:amd64 (1.5+dfsg-2) ...
Removing libmail-sendmail-perl (0.80-1) ...
Removing libonig4:amd64 (6.7.0-1) ...
Removing libsys-hostname-long-perl (1.5-1) ...
Removing scour (0.36-2) ...
Removing python3-scour (0.36-2) ...
Removing debhelper (11.1.6ubuntu2) ...
Removing dh-strip-nondeterminism (0.040-1.1~build1) ...
Removing libfile-stripnondeterminism-perl (0.040-1.1~build1) ...
Removing po-debconf (1.0.20) ...
Removing dh-autoreconf (17) ...
Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
Processing triggers for libc-bin (2.27-3ubuntu1) ...
然后应该就可以继续了。我试一试。
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