IDE and Terminal

Terminal

Useful Aliases

alias ld='ll -d */'
alias lf='ll -p | grep -v /'
alias cl='clear'
alias histgrep='history | grep' 
alias addalias='vi ~/.bashrc'
alias sr='source ~/.bashrc'
alias myip='export TF_VAR_my_ip="$(curl ifconfig.me)/32"'
alias awscreds='sudo vi ~/.aws/credentials'

alias gitacp='git add -A; git commit; git push'
alias gitac='git add -A; git commit'
alias gitst='git status'

CLI Tools

CLI Completion

Enable completion for some of the available CLIs.

# Enable autocompletion for the Kubernetes cluster manager utility kubectl:
source <(kubectl completion bash)

# Enable autocompletion for Helm
source <(helm completion bash)

VIM Shortcuts

Go to top of the file (first line of the file).

gg

Go to bottom of the file (last line of the file).

Shift + g

Copy an entire line.

yy

Paste after a line.

p

Insert an empty line below a line.

o

Set line numbers.

:set number

Go to a line (like line 10).

:10

Powershell and CMD

Checking the IP configurations:

ipconfig

Checking all entries in the ARP cache. ARP maps IP addresses to their respective MAC addresses. Just simply means it checks the connected devices.

arp -a

Find applications or services listening on a certain port, e.g. 3389. Add a “-p” flag to specify protocol, e.g. tcp.

netstat -p tcp -n | find '443'          # Command Prompt
netstat -p tcp -n | findstr '443'       # Powershell

To display all the routing table entries:

route print

To show the “hops” or router that a connection will go through to reach a specified target. Add “-d” flag to show just the IP address of each hop.

tracert -d youtube.com

Combination of ping and tracert:

pathping youtube.com

To resolve a DNS name. Basically you can provide a DNS name and it will resolve the IP address. Below is a forward DNS lookup.

nslookup youtube.com

“Non-authoritative” means that the local DNS Server cannot resolve the DNS name but its able to find a DNS Server that could resolve it.

Reverse lookup is when you have the IP address and you want to find the DNS name. To do this, set the type to PTR.

nslookup 
set type=PTR 
8.8.8.8

To view or modify the file system permissions in Windows. Use “icacls”, followed by the directory path. The “.” means current directory.

To refresh DHCP lease:

ipconfig /release
ipconfig /renew

To empty DNS cache:

ipconfig /flushdns

Visual Studio Code

Undo and Redo

Visual studio code follows the same:

# Undo 
Ctrl + z 

# Redo 
Ctrl + Shift + z

Create nested folders

Click the folder icon to add a folder.

To add nested folder, type the subsequent folders after “/”.

Collapse all folders

Hidden Files

Some hidden files normally start with “.” and are excluded from view. You can more excluded files by:

Search inside a file

To search for a particular section of a file or a code, we can use the shortcut below. This saves time from scrolling over the whole file. This works with code too.

Ctrl + Shift + P --> @

Run/Search for a command

To run a command, we can also use the same, then type the command.

Ctrl + Shift + P --> >

Duplicate a line

To duplicate a line multiple times, click and hold the keys:

Alt + Shift + Down arrow

Move a line

Similar to cutting a line and pasting it somewhere else in the file, we can also use the shortcut below.

Alt + Up/Down arrow

Fold sections of a file

We can hide sections of a file by “folding” them.

Ctrl + Shift + p 
>fold all

Multicursor Editing (adding same text to multiple lines)

To type the same text on multiple places simulatenously:

Alt (hold) 
Use the mouse to click the places to edit

Note that in some cases, it could be:

Ctrl (hold) 
Use the mouse to click the places to edit

Replace all Occurence

To replace all occurence of a text in a file (for example, the word), select the particular word and:

Shift + o

All occurence of the word will be highlighted and will be edited at the same time.

The number of occurence will also appear at the bottom right.

Linked Editing (for HTML Tags)

To edit the open and closing tag at the same time, we can enable linked editing.

Ctrl + Shift + p 
>linked editing

Shortcut for Keyboard Shortcuts

Open the keyboard shortcuts page for the first time by

Ctrl + Shift + P
> keyboard shortcuts

Then select “Preferences: Open Keyboard Shortcuts”

Type “Open keyboard shortcuts”. For the keybinding, click “CTRL (hold), K, S, enter”

The next time you want to see the keyboard shortcuts, just type:

Ctrl (hold) + k + s"

Change keyboard shortcuts

Make sure to follow the step before this to set the shortcut for the keyboard shortcuts page first. To change or set a keyboard shortcut:

Ctrl (hold) + k + s"

HTML Trick - Emmet

This syntax assistance is particularly useful for HTML for writing boilerplate code.

To generate a layout, define the keywords/letters followed by “+” sign. Example:

article>header+h1+p
press tab

which will generate:

<article></article>
<header></header>
<h1></h1>

To create a numbered list with 10 items:

ul>li*5
press tab

which will generate:

<ul>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
</ul>

Other Stuff