Questions tagged [operating-system]

Question 1

I am looking at a script and it contains these two lines: HOME="$( grep ^root: /etc/passwd | awk -F ':' '{ print $6 }' )" export HOME This of course loads the variable named HOME with /...

Question 2

I am assembling and setup a home lab PC. I am installing Ubuntu 22.04 OS. Along installation steps, I did not choose any additional packages, simply selected skipped. However, I'm always stuck right ...

Question 3

I'm not sure if this question is more adequate to be asked here, in Super User or Unix Exchange but this seemed like the best forum to me. I'm used to virtualizing several VM's in a single host. I ...

Question 4

Greetings! A server which is equipped with 512GB RAM(16 slots * 32GB) which OS is Ubuntu 22.04. During boot up, server reserving 16259356K(15GB) RAM showed in dmesg that resulted only 498GB is ...

Question 5

I have an idea to boot the system with network files for automated installation of OS I have created an ISO with gub-mkrescure with just a grub inside it, so when it boots the grub menu will appear ...

Question 6

I have a template unit that that I have to created in order to start/stop some services running an a given port. something like [email protected], [email protected]. [Unit] After=network.target ...

Question 7

I had a user come to me with her company issued Dell laptop. After the "Dell" splash screen is done, Windows does not boot. It's just a blank, black screen. After rebooting several times via ...

Question 8

If you are a small business and have some old, non-internet-facing servers around, what are the pros and cons for dealing with the OS situation? We have an old server that is used for numerical and ...

Question 9

I'm just bit curious if it is possible to install Webmin on a Plesk system for admin purposes. Yes I know this is like break the holy grail for many sysadmins which love the prompt, but we in our ...

Question 10

we have CentOS server installed on 83GB FS size while the OS disk size is 480gb how can we increase the FS to use the whole disk (sda, 480gb)? [root@server ~]# df -kh Filesystem Size ...

Question 11

I’ve been searching for this for the last 2 weeks and still not fully get it)…,8; someone could help me i will appreciate so much. So, i would like to know the way AKA protocol server hosting company ...

Question 12

I purchased a refurbished HP Proliant Server DL560 Gen8 in order to create my own home lab. The most painful step was to get an Operating System properly working, doesn't matter what was the OS. I ...

Question 13

This is a case of "we are where we are". I'm a developer and I've been asked to get a list of every server on our network (IP and hostname) along with the OS version We exclusively use ...

Question 14

I have a NodeJS instance on Amazon LightSail. I want to upgrade the underlying Operating System to a newer major version, say Ubuntu 18 LTS to Ubuntu 20 LTS. When I create a new instance from the ...

Question 15

I was transferring a set of existing raid drives into a second-hand server, an HP Gen9 server. I observed 2 interesting details: When I was configuring UEFI boot Order shown in the picture below, I ...

Question 16

What's the big deal around POSIX and how it interferes in the overall usage of an Operating System?

Question 17

I'm after a fresh centos stream 9 install as minimal install, with only English keyboard and only root user. After installing, I rebooted and got to the login screen. Trying to type "root" ...

Question 18

I have a general question about Virtual Machines. It is not clear to me if I need an operating system at the lower level and then install the VM and on top of that the rest or I can install a VM ...

Question 19

I would like to run Debian 10 OS from the SD card slot in dl380 G6. It's a minimal install. I will run nextcloud on this server for personal use which will be ofcourse on the disks. I was wondering if ...

Question 20

Sometimes a server will start showing some kind of hardware failures, not disabling its functionalities, but requiring hands-on presence (it could be days to reach, if remote post). In some such cases,...

Question 21

I have to start an executable on a vps, but the "customer" rented an ubuntu one. I tried to install Wine as many sites and questions on stackoverflow suggested, but this VPS lacks some ...

Question 22

I would like to know if there is anyway to ensure security of the host machine while hosting potentially malicious virtual machines. The host machine should never crash or be compromised no matter ...

Question 23

I currently have a NAS running ZFS on Ubuntu but have recently changed my main windows software to pool local drives using Stablebit DrivePool. I cannot include networked drives in DrivePool unless ...

Question 24

I cannot find a clear answer to that question. All the answers lead to this: Red Hat providers technical support for their distro while CentOS does not. Also, CentOS lags behind with the updates. Are ...

Question 25

I just inherited a brand new HPE DL360 Server with 6x600GB and 2x300GB HDD drives in it and 16GB of RAM and i'm planning to install a fresh RHEL distribution. Having not much experience with RAIDS and ...

Question 26

Newly installed FreeBSD 12.1 and 11.4 immediately freezes when loading oce by running kldload if_oce. The whole system becomes locked up at this time. CTRL+c and CTRL+z don't work. What is the ...

Question 27

I noticed in the Oracle Linux 7 documentation, there's a procedure for upgrading the operating system in place for OL6 -> OL7, but I can't seem to find the same instructions for OL7 -> OL8. Is it ...

Question 28

I couldn't find a documentation on configuring HA on Mac OS (Catalina). There's an application called Mac OS Server but the documentation doesn't talk anything about HA rather it looks to be an ...

Question 29

How do I know if my server has a OS. How do I know if it is only a media device to store files on? I want to know if it has an OS or if I need to install an OS onto it to help with my work.

Question 30

i want to copy all files (/var/www/html) from system A (debian) to system B (debian) without loosing all chown and chmod configurations. there are more then 200.000 files in the folder and many of ...

Question 31

I am wondering how can I do remove old kernel from Ubuntu operating system. Please refer image screenshot taken. Please advice. Many thanks. list of linux kernel

Question 32

I am able to create a new virtual machine that's of a larger size than my current one, but I am not able to upgrade or resize an old VM to that larger size even though it's of a pretty similar type. ...

Question 33

Recently We are using Windows Server 2016, but there is no option "Log off' like in older version of OS, Only there are "Disconnect", "Shutdown" and "Restart" option. I would like to activate Logoff ...

Question 34

I am trying to import registry keys along with my application installation using powershell. I am using below command to import registry values (which is placed in a file RegFileName) reg import ".\$...

Question 35

I have one VM with ContainerOS with the specific configuration: Image: cos-stable-76-12239-60-0 Machine: g1-small (1 vCPUj, 1,7 GB) CPU: Intel Broadwell Every hour this VM log these erros message: ...

Question 36

I installed debian buster on a server while it was the debian testing release. Now that buster is the current stable release, I've updated /etc/apt/sources.list and run apt-get update, apt-get ...

Question 37

I'm in a hard time trying to compile things with just dependencies within the system original folders. However, there are different versions of libraries and tools installed in /usr/local. G++ is ...

Question 38

I have two server,then these servers need to install postgresql10 , server A could install postgresql10 using yum install , but server B has a rule that is not allowed to connect the internet. So I ...

Question 39

Recently I tried to apply for some DevOps Engineering positions, but I got scared about a specific requirement that was present in almost every job description: Experience with Linux internals and ...

Question 40

Im new here and i have no clue about servers. I recently bought a poweredge R410 with 64gb ram 16 core 2Tb single SAS hd. I downloaded windows server 2012 from microsoft and i failed to install it. ...

Question 41

I want to do something along the lines of: Is this possible with Puppet? If not, what's the best way I can distinguish modules by operating system?

Question 42

I am working on the project in which I have decided to install operating system from server PC to all the client PC. I have one windows iso file on the server PC which is shared on the network. This ...

Question 43

How to convert linux SWAP memory from RAID1 to RAID0? Start with:2 exact size swap formatted partitions (/dev/sdc5 and /dev/sdd5) on 2 physically separate disks that are used via Software RAID(named ...

Question 44

I am soon teaching a hands-on class for which I need to spin around 20 VMs for each student. It's sort of a lab. I have about 15 students in my class. You can guess how fast this can go out of control....

Question 45

I am a beginner so please bear that in mind if you choose to answer the question. I have a HP Proliant Dl580 G5 with the following specs : 4x Six-Core XEON 2.4GHz E7450 128GB RAM 4x 72GB SAS 15K I ...

Question 46

I have a situation where i need to view memory and disk space used by operating systems (windows2012r2 and centos) and web servers (IIS(windows2012r2) and apache(centos)), both of them made as a ...

Question 47

I'm performing an AIX migration from 7.1 to 7.2 using the DVD Iso on a VIOS Virtual Library. At the point the migration starts, it fails with the following message: 0516-1775 varyonvg: Physical ...

Question 48

it is generally admitted that a computer can be considered unsecure when someone else than the designated operator has physical access to it. But since hosted servers are remote, in a datacenter, and ...

Question 49

Problem: Backup throughput suddenly went down from 1TB+ per hour to 350GB per hour in HPUX server for DB2 database. Backup using Commvault backup software to the media agent via 10G network. ...

Question 50

I've read several articles about load average and all explained that the load average is the amount of processes in running/waiting to run state on CPU , so it's actually the CPU's run queue + the ...