nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format

nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format - 12de

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Protects Linux machines from accidental shutdowns/reboots with molly-guard

Oops! I did it again. I thought I was logged into my home server. Turns out I rebooted the db server. Another my not so favorite is typing “shutdown -h 0” into the wrong terminal. I know a few people who have admitted to doing that here.My anger that can’t be containedIs there any end to the madne...

Linux find Windows 10 OEM product key command

I removed and installed Ubuntu Linux 16.04 LTS on my development Lenovo laptop. However, I need to use my Windows 10 pro in KVM VM for running the accounting app. How do I find and print my embedded Windows 10 pro key from a Linux command line option? How can I retrieve Microsoft Windows 8 and 1...

Linux / Unix Rsync Copy Hidden Dot Files and Directories Only

How do I use the rsync tool to copy only the hidden files and directory (such as ~/.ssh/, ~/.foo, and so on) from /home/jobs directory to the /mnt/usb directory under Unix like operating system?The rsync program is used for synchronizing files over a network or local disk...

Add a new user account with admin access on Linux

How do I add a user account with admin (sudo) access on Ubuntu or CentOS Linux cloud server? How can I add a new user with admin account level access in Linux?On the Linux operating system, one needs to use the sudo command to provide admin-level access. In other words, the sudo command ...

Alarm clock Set Timeout For A Shell Command

How can I run a command called foo, and have it timeout/abort after 10 seconds under GNU/Linux running bash shell or script? How do I run the command under an alarm clock?You should able to use python / ruby / php or perl to set alarm clock timer to timeout for a shell command. Shell d...

How to use/run bash aliases over ssh based session

I have set up a bash alias named file_repl. It works entirely when I log in using ssh command. However, my bash aliases are not running over ssh, for example:$ ssh vivek@server1.cyberciti.biz file_replbash: file_repl: command not foundHow do I run bash shell aliases when I use ssh comm...

CentOS Linux 8.1 (1911) released and here is how to upgrade it

CentOS Linux 8.1 (1191) released. It is a Linux distribution derived from RHEL (Red Hat Enterprise Linux) 8.1 source code. CentOS was created when Red Hat stopped providing RHEL free. CentOS 8.1 gives complete control of its open-source software packages and is fully customized for research ...

Dell XPS 13 Developer Edition 2020 Ubuntu Laptop Announced

Look like Dell listing to customer feedback. Dell XPS 13 Developer Edition is the ultimate Linux laptop for developers and Linux enthusiasts/power users. The Dell XPS 13 Developer Edition 2020 now supports 10th Gen Intel CPU and 32GB ram. This system comes pre-installed with Ubuntu Linux 18.04, ...

Helios64 Arm-Based Linux NAS announced

Helios64 is an upgraded version Helios4 of ARM-based NAS SBC (Single-board computer) for Linux. This NAS (Network Attached Storage) comes with 5 SATA 3.0 port, M.2 sata slot, LPDDR 4 ram, and hexacore SoC. Let us see some details about the Helios64 Arm-Based Linux NAS SBC, including ...

Linux rpm List Installed Packages Command

How do I list all installed packages using rpm command on CentOS/Suse/Fedora/RHEL/Scientific and Red Hat Enterprise Linux? Can you tell me the Linux command to list all rpm’s installed on the server?The rpm command is a powerful package manager. It is used to build, install, query,...

Linux Find Out Maximum RAM Supported By Server / BIOS

How do I find out the maximum RAM supported by the Dell, HP, IBM, Oracle/Sun or Intel/AMD server on a Linux or Unix-like operating systems without rebooting the server or opening the server case (chassis)? How can I find find out maximum RAM supported by the Server BIOS and motherboa...

How to configure Nginx with Let’s Encrypt on CentOS 8

How do I secure my Nginx web server with Let’s Encrypt free ssl certificate on my CentOS 8 server? How to set up and configure Nginx with Let’s Encrypt on CentOS 8?Let’s Encrypt is a free, automated, and open certificate authority for your website, email server and more. This page shows ho...
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