#Linux Linux 101 : Troubleshooting a system startup To diagnose a slow starting system, we could use a systemd tool called - systemd-analyze - as follow: It shows us the list of processes that start at b October 10, 2022 Share
#Linux Linux 101 : Systemd services and their different types To list the services running on a system using the systemd commands, we could use the below command: Our services displayed above could have one of the October 05, 2022 Share
#Cloud Cloud 101 : SaaS - Software as a Service -, PaaS - Platform as a Service -, and IaaS - Infrastructure as a Service - To be able to host a running applications on the cloud , we have many options. Our first option is IaaS - Infrastructure as a Service -, where by, the c October 03, 2022 Share
#Linux Linux 101 : Useful Shell Tips - Tricks -find, mv, subcommands, ... - The below example will list all the files that start with a letter, has a digit and ends with an underscore: The below example will match any file star September 30, 2022 Share
#Linux Linux 101 : Changing users - "su" command - To start using a different existing account in Linux , we could switch to another user through the below command: We switch to a user_name , but we keep September 27, 2022 Share
#Linux Linux 101 : Mount - devive busy - error message We have a partition - /dev/sda2 - that we want to mount on the mountpoint - /media/backup - as below, but we get a error message: The below command tell September 21, 2022 Share
#Linux Linux 101 : Creating logical volumes - Physical volumes, Volume groups, Logical volumes - LVM - logical volume manager - offers up the flexibility: to grow a storage space to have a storage space that can spam multiple disks to combine several September 19, 2022 Share
#Istio Istio 101 : An overview of the architecture A service mesh is the software that connects services and containerized applications that are running as pods . It also manages traffic control, the di September 15, 2022 Share
#storage Storage 101 : Object storage and Block storage Bock storage: Bock storage manages data in blocks that are accessed using the iSCSI protocol for example. The end user accesses block storage over the n September 10, 2022 Share
#storage Storage 101 : Types of storage - File storage, Object storage and Block storage - Below is a simple diagram that depicts the types of storage: NAS - Network Area Network: In file storage - NAS -, the computation overhead is embedded w September 08, 2022 Share
#Linux Linux 101 : The boot process Below is a simplified diagram of the boot process of a Linux system: Remark: The UFEI is the new version of the BIOS and the GPT is the new version of t September 06, 2022 Share
#Linux Linux 101 : Background and Foreground processes By adding an ampersand - & - character to a command, we tell Linux to run it in the background and return to the shell prompt, allowing us to use September 01, 2022 Share
#Linux Linux 101 : Monitoring storage usage To monitor the disk usage for our mounted filesystems, we could use the below command: -h : outputs the results in human-readable format - gigabyte or August 29, 2022 Share
#Linux Linux 101 : Formatting, mounting and using a USB flashrive To check that a USB flash drive was recognized by a Linux system, we use the " lsusb " command: To show the disks and their partition, we could August 26, 2022 Share