Shell Scripts
Writing shell scripts - Lesson 3: Here Scripts
http://linuxcommand.org/lc3_wss0030.phpLinuxCommand.org: Learn the Linux command line. Write shell scripts.
http://linuxcommand.org/LinuxCommand.org: Learn the Linux command line. Write shell scripts.
http://linuxcommand.org/
Makefile
What is a Makefile and how does it work?
https://opensource.com/article/18/8/what-how-makefile
Network
Linux Network Administrators Guide
http://www.tldp.org/LDP/nag2/index.html
Kernel
Linux Kernel 2.4 Internals
http://www.tldp.org/LDP/lki/index.html
systemd
file system
Important parts of the kernel
https://www.tldp.org/LDP/sag/html/kernel-parts.htmlMajor services in a UNIX system
https://www.tldp.org/LDP/sag/html/major-services.htmlThe /usr filesystem.
https://www.tldp.org/LDP/sag/html/usr-fs.htmlThe /etc directory
https://www.tldp.org/LDP/sag/html/etc-fs.htmlThe /var filesystem
https://www.tldp.org/LDP/sag/html/var-fs.htmlGeneral overview of the Linux file system
http://tldp.org/LDP/intro-linux/html/sect_03_01.html
make
Automake
General
Introduction to Linux
http://tldp.org/LDP/intro-linux/html/