What is the use of -y in CentOs 7 command - centos7

Command
yum -y install httpd
and in other commands while installing software or services online

Type man yum to see the options.
-y, --assumeyes
Assume yes; assume that the answer to any question which would be asked is yes.
Configuration Option: assumeyes

Related

Install redis-cli only on CentOS

How can I install redis-cli only on CentOS, I know how to do it on ubuntu "sudo apt-get install redis-tools" but looking for similar package for CentOS.
If you are using amzn linux 2:
sudo amazon-linux-extras install epel -y
sudo yum update
sudo yum install redis
I am familiar with this approach:
wget http://download.redis.io/redis-stable.tar.gz
tar xvzf redis-stable.tar.gz
cd redis-stable
make
cp src/redis-cli /usr/local/bin/
chmod 755 /usr/local/bin/redis-cli
as you can see above, here you have to compile the source code using make. You hence need to make sure that you have c compiler on your OS. If you do not, then this can help you:
sudo yum install gcc
Also be aware, that this approach will also create another executables in src/ folder. I recommend you to check this out here.
hope it helped, have a nice day!

amazon-linux-extras specific version

I am trying to install a specific version using amazon-linux-extras but I have no idea how to do it. The usual way of doing it with yum seems to not work. Is there any way to do it?
sudo amazon-linux-extras install -y tomcat8.5
The command above installs the latest.
According to the docs, the format is topic=version if you want to install a specific version so try something like:
$ sudo amazon-linux-extras install tomcat8.5=8.5.31
References:
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/amazon-linux-ami-basics.html#extras-library

RHEL: This system is currently not set up to build kernel modules

I am trying to install virtualbox5.2 on a RHEL 7 VM When I try to rebuild kernels modules I get the following error:
[root#myserver~]# /usr/lib/virtualbox/vboxdrv.sh setup
vboxdrv.sh: Stopping VirtualBox services.
vboxdrv.sh: Building VirtualBox kernel modules.
This system is currently not set up to build kernel modules.
Please install the Linux kernel "header" files matching the current kernel
for adding new hardware support to the system.
The distribution packages containing the headers are probably:
kernel-devel kernel-devel-3.10.0-693.11.1.el7.x86_64
I tried install kernet-devel and got success message
Installed:
kernel-devel.x86_64 0:3.10.0-693.21.1.el7
Complete!
But still the setup fails.
Any idea what is missing here?
sudo yum install -y "kernel-devel-$(uname -r)"
Substitute dnf on Fedora. I didn't need to do a reboot, but ymmv.
Edit for 2020:
Centos/RHEL 8 now also use dnf instead of yum. I haven't had occasion to test this on those distros, so the same YMMV disclaimer still applies.
First run in terminal: uname -r then you will get name and information about current kernel (CURRENT_KERNEL).
Now you can install with command: yum install kernel-devel-CURRENT_KERNEL
Note: replace CURRENT_KERNEL with string you get from uname -r.
The same message happened when I tried to upgrade VirtualBox 5.2.12 Guest Additions on my Kali Linux (GNU/Linux Rolling version). I fixed it by following steps:
Do apt update/upgrade to keep your system up-to-date. Do not forget to reboot the system.
Run "apt-get install linux-headers-$(uname -r)".
Run VBoxLinuxAdditions.run from terminal, error message gone and Guest Additions will be installed successfully.
Reboot system, Guest Additions works fine.
I got here looking for the same answer for CentOS 6, and the above answers worked with slight modification (so, for anyone else that lands here too)...
yum install -y kernel-devel kernel-devel-$(uname -r)
So, "yum" instead of "apt-get"
Also, some Linux use "linux-headers" instead of "kernel-devel" but the principle seems to be the same.
The kernel your were using was kernel-devel-3.10.0-693.11.1.el7.x86_64 is slightly different with the one that you installed kernel-devel.x86_64 0:3.10.0-693.21.1.el7 . In my case, there are several different version installed on my OS, and "sudo yum install kernel-devel" always install the newest one for me. Then I work it out by setting my default kernel version as same as yum installed for me. You can check the kernel you have installed on your OS by following command:
sudo awk -F\' '$1=="menuentry " {print i++ " : " $2}' /etc/grub2.cfg
Then just set the kernel version you choose to use as same as yum choose for you,by following command:(notice that the number at last is pick up from preceding command result),
sudo grub2-set-default 0
generate the grub2 config with 'gurb2-mkconfig' command, and then reboot the server.
sudo grub2-mkconfig -o /boot/grub2/grub.cfg
sudo reboot
Milan Rakos is right. Your installed kernel-devel must have suffix string exactly the same as the uname -r output. Besides, the logs during the vboxdrv.sh setup also shows the wanted version of the kernel-devel.
So to your case, You will run the command:sudo yum install kernel-devel-3.10.0-693.11.1.el7.x86_64
to solve this problem I ran yum update -y. I think this is the fastest way to solve it. Another solution is to configure the repos with the installation DVD, so you can install the kernel-headers of your current version of CentOS.
My History:
yum install epel-release
yum install perl gcc dkms kernel-devel kernel-headers make bzip2
yum groupinstall "Development tools"
yum update -y
reboot
After that, I mount de VBoxGuestAdditions and I ran the process
yum install kernel-devel-3.10.0-693.11.1.el7.x86_64 fixed the issue.
A little late to the party but I just ran into this problem myself and here's what I did to resolve the issue.
yum update -y
yum install -y redhat-lsb-core net-tools kernel-headers kernel-devel epel-release
yum groupinstall -y "Development Tools"
reboot
Ensure your system has been fully updated when you ran yum update -y before continuing!
Cheers

need help to install php 7.2 yum packages on aws ec2

I haven't seen any yum packages for php 7.2 on AWS EC2 and the release has been out over a month.
I have tried yum list | grep php7 and only able see php70 and php71 packages.
Has anyone installed php72 on AWS EC2?
Is there another yum repo to connect to?
Does AWS have a delivery scheduled?
Although the #amzn-main repo doesn't have PHP 7.2 yet (as far as I know), you can use remi-php72. According to his release blog you can install the EPEL and Remi repositories via:
wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm
wget http://rpms.remirepo.net/enterprise/remi-release-6.rpm
rpm -Uvh remi-release-6.rpm
rpm -Uvh epel-release-latest-6.noarch.rpm
And then enable remi-php72 using yum-config-manager:
yum install yum-utils
yum-config-manager --enable remi-php72
After that, you can simply search and install php and all the needed extensions like normal:
sudo yum install --disablerepo="*" --enablerepo="remi,remi-php72" php php-fpm php-cli ...
As #Typel says in a comment on the other answer - if you're using Amazon Linux 2 AMI then
sudo amazon-linux-extras install -y php7.2
Beats installing multiple external repos and has most of th basics, including mariadb and vim (everything I need to feel happy!).
See the list: sudo amazon-linux-extras list

CentOS 7 - Warning: group chinese-support does not exist

I installed a CentOS 7 in my VMware workstation, but this os doesn't support Chinese. So I used yum goupinstall -y chinese-support to install Chinese Language package. but I got this:
and I have typed the command yum -y update;
What can I do then ?
On Centos 7 yum groupinstall "fonts"
I got the same problem. I resolved the problem with the command yum groupinstall "fonts"
For most groups hit by this bug, I worked around this by using description with escaped spaces:
yum groupinstall Web\ Server
worked where
yum groupinstall "Web Server" / yum groupinstall web-server
failed.