Commands

Disk management

df -h

lsblk

fdisk, gdisk: partitioning tools

lvextend | lvreduce: extends | reduce the size of a logical volume (LVM)

Memory management

free -h: displays physical memory statistics

vmstat: displays virtual memory statistics

top: displays CPU and memory usage, along running jobs

File management

lsmod: lists all installed kernel modules

Networking

networkmanager package (nmtui and nmcli)

nmtui: Text User Interface for controlling NetworkManager

nmcli: command-line tool for controlling NetworkManager

Vim

• Find an replace all occurrences of foo with bar: :%s/foo/bar/g
• Find occurrence: / and type word
• delete/cut line: dd
• copy line: yy
• paste line above: shift + p
• paste line below: p
• create new line below: o
• undo: u
• select block: ctrl + v and move the cursor keys
• select line block (visual mode): v and move cursor
• copy selection: y
• paste: p
• Move to the beginning/ end of a word: w / e
• Move to beginning/end of line and start editing: shift + i / shift + a
• Move to the end of line: $
• Jump forward/backward one line: j / k
• Jump forward/backward one paragraph: { / }
• Move to the beginning/end of document: gg / shift + g

Buffers (file tabs)

• Open new file in buffer -> :e <filename path>
• List active buffers -> :ls
• Change to specific buffer -> :b <buffer-number>
• Move to next/previous buffer -> :bn/:bp
• Jump back/forward to last jump location -> Ctrl + o/Ctrl + i

Change tab spacing in Vim

$ vi

:e $HOME/.vimrc

set tabstop=4

:x