meaning that when you execute the program, it runs as though the file owner is the user instead of you. Many programs use this setuid bit to run as root in order to get the privileges they need to change system
NOTE Use the visudo command to edit /etc/sudoers. This command checks for file syntax errors after you save the file. That’s it for sudo for now. If you need to use its more advanced features, see the sudoers(5) and sudo(8) manual pages. (The actual mechanics of user switching are...
Network Basics Learn about networking basics and the TCP/IP model. Subnetting Learn about subnets and how to do subnet arithmetic! Routing Learn how packets are routed across networks! Network Config Learn about network configuration using Linux tools!
This chapter is a guide to the Unix commands and utilities that will be referenced throughout this book. This is preliminary material, and you may ...
Want to go back to the basics? Find outwhat is embedded Linux. Why is Linux the OS of choice for embedded systems? Check out the official guide to Linux for embedded applications inwhitepaperorwebinarform. Interested in a hearing a detailed comparison of Yocto and Ubuntu Core? Watch the la...
Docker format relies on thedevice mapper thin provisioningtechnology that is an advanced variation of LVM snapshots to implement copy-on-write in Red Hat Enterprise Linux 7. The above image shows the fundamental components of any image-based container: ...
Edge computing Updates on the platforms that simplify operations at the edge Infrastructure The latest on the world’s leading enterprise Linux platform Applications Inside our solutions to the toughest application challenges Original shows Entertaining stories from the makers and leaders in enterprise tech...
In Chapter 2, we looked at the basics of Linux file I/O—really, the basis of Unix programming—with system calls such as read(), write(), open(), and close(). In Chapter 3, we discussed user-space buffering and the standard C library’s implementation thereof. In this chapter, we...
Apache 2.2 ii apache2-utils 2.2.9-10+lenny4 utility programs for webservers ii apache2.2-common 2.2.9-10+lenny4 Apache HTTP Server common files ii apt 0.7.20.2+lenny1 Advanced front-end for dpkg ii apt-utils 0.7.20.2+lenny1 APT utility programs ii bash 3.2-4 The GNU Bourne Again ...
Understanding the basics of Linux is crucial for many roles in modern IT environments. These questions cover foundational knowledge you’re likely to encounter in entry-level interviews. As you progress, consider exploring more advanced topics such as process management, scripting, file systems, and ...