Linux

Getting Runtime Information

• Memory Info
• CPU Info
• Network Info
• Linux Ports
• Process Info
• File Descriptor Info
• Kernel Info
• Load Average
• Storage Info
• Time Info
• Virtualization Info
• Temperature Info

Concepts

• General
• Kernel
• Network
• Storage
• Logical Volume Management
• Power Management
• Memory Management
• Process Management
• Security
• NFS
• Virtualization
• Logging
• systemd, System V init
• The /proc Filesystem
• Linux Entropy
• Linux Resource Management

Subjects

• RHEL
• systemd
• Linux Convenience Aliases
• NFS
• Linux Virtualization
• Linux Logging
• Debian
• Ubuntu
• Linux Boot
• LUKS

Installation

• RHEL 7/Centos 7 Installation
• Dell Server Setup Procedure
• RHEL 7 Virtualization Host Installation
• Reconfigure Linux VM Guest Image

Configuration

• Linux 7 Network Configuration
• /etc/fstab
• /etc/exports
• /etc/resolv.conf
• /etc/nsswitch.conf
• /etc/hostname
• /etc/machine-id
• /etc/security/limits
• /etc/sysctl.conf
• /etc/services
• Rescuing System with Lost Root Password
• Upgrading the Kernel
• Linux Disable Swap
• Kernel Runtime Configuration
• Create Filesystems
• Mount a Filesystem at Boot
• NTP Client

Operations

• Clean Logs

Commands

ip	ethtool	yum	date	zip, unzip	mailx	grep	sed
top	vmstat	hostname	hostnamectl	cron	chkconfig	rpc.statd	mount
find	read	curl	wget	dmesg	sudo	ifconfig	dig
modinfo	lshw	lvs	pvs	vgs	fdisk	sfdisk	wipefs
ls	ln	ulimit	test	ps	getconf	hdparm, sdparm	umask
exportfs	rpcinfo	showmount	iftop	nohup	ssh	gdrive	rsync
uuidgen	chroot	awk	expr	sysctl	lsof	lspci	df
pvcreate	lvcreate	netstat	rpm	timedatectl	kill	netfs	nslookup
vi	chmod	blockdev	env	sort	logrotate	stat	lsblk
dd	exec	readlink	uuencode/uudecode	traceroute	tar	diff	brctl
useradd	groupadd	usermod	tput	postfix	route	tty	stty
envsubst	parted	cryptsetup	hexdump	xargs	ping	getopts	nc
mktemp	pwd	wait	tr	apt	set	tee	install
lsmod	modprobe

Virtualization Commands

Linux Virtualization Commands