Visual Studio Code – Keyboard shortcuts for Linux


General

Ctrl+Shift+P, F1 Show Command Palette
Ctrl+P Quick Open, Go to File…
Ctrl+Shift+N New window/instance
Ctrl+W Close window/instance
Ctrl+, User Settings
Ctrl+K Ctrl+S Keyboard Shortcuts

Basic editing

Ctrl+X Cut line (empty selection)
Ctrl+C Copy line (empty selection)
Alt+ ↓ / ↑ Move line down/up
Ctrl+Shift+K Delete line
Ctrl+Enter /
Ctrl+Shift+Enter
Insert line below/ above
Ctrl+Shift+\ Jump to matching bracket
Ctrl+] / Ctrl+[ Indent/Outdent line
Home / End Go to beginning/end of line
Ctrl+ Home / End Go to beginning/end of file
Ctrl+ ↑ / ↓ Scroll line up/down
Alt+ PgUp / PgDn Scroll page up/down
Ctrl+Shift+ [ / ] Fold/unfold region
Ctrl+K Ctrl+ [ / ] Fold/unfold all subregions
Ctrl+K Ctrl+0 /
Ctrl+K Ctrl+J
Fold/Unfold all regions
Ctrl+K Ctrl+C Add line comment
Ctrl+K Ctrl+U Remove line comment
Ctrl+/ Toggle line comment
Ctrl+Shift+A Toggle block comment
Alt+Z Toggle word wrap

Rich languages editing

Ctrl+Space Trigger suggestion
Ctrl+Shift+Space Trigger parameter hints
Ctrl+Shift+I Format document
Ctrl+K Ctrl+F Format selection
F12 Go to Definition
Ctrl+Shift+F10 Peek Definition
Ctrl+K F12 Open Definition to the side
Ctrl+. Quick Fix
Shift+F12 Show References
F2 Rename Symbol
Ctrl+K Ctrl+X Trim trailing whitespace
Ctrl+K M Change file language

Multi-cursor and selection

Alt+Click Insert cursor*
Shift+Alt+ ↑ / ↓ Insert cursor above/below
Ctrl+U Undo last cursor operation
Shift+Alt+I Insert cursor at end of each line selected
Ctrl+L Select current line
Ctrl+Shift+L Select all occurrences of current selection
Ctrl+F2 Select all occurrences of current word
Shift+Alt + → Expand selection
Shift+Alt + ← Shrink selection
Shift+Alt + drag mouse Column (box) selection

Display

F11 Toggle full screen
Shift+Alt+0 Toggle editor layout (horizontal/vertical)
Ctrl+ = / – Zoom in/out
Ctrl+B Toggle Sidebar visibility
Ctrl+Shift+E Show Explorer / Toggle focus
Ctrl+Shift+F Show Search
Ctrl+Shift+G Show Source Control
Ctrl+Shift+D Show Debug
Ctrl+Shift+X Show Extensions
Ctrl+Shift+H Replace in files
Ctrl+Shift+J Toggle Search details
Ctrl+Shift+C Open new command prompt/terminal
Ctrl+K Ctrl+H Show Output panel
Ctrl+Shift+V Open Markdown preview
Ctrl+K V Open Markdown preview to the side
Ctrl+K Z Zen Mode (Esc Esc to exit)

Search and replace

Ctrl+F Find
Ctrl+H Replace
F3 / Shift+F3 Find next/previous
Alt+Enter Select all occurrences of Find match
Ctrl+D Add selection to next Find match
Ctrl+K Ctrl+D Move last selection to next Find match
Navigation
Ctrl+T Show all Symbols
Ctrl+G Go to Line…
Ctrl+P Go to File…
Ctrl+Shift+O Go to Symbol…
Ctrl+Shift+M Show Problems panel
F8 Go to next error or warning
Shift+F8 Go to previous error or warning
Ctrl+Shift+Tab Navigate editor group history
Ctrl+Alt+- Go back
Ctrl+Shift+- Go forward
Ctrl+M Toggle Tab moves focus

Editor management

Ctrl+W Close editor
Ctrl+K F Close folder
Ctrl+\ Split editor
Ctrl+ 1 / 2 / 3 Focus into 1
st, 2nd, 3rd editor group
Ctrl+K Ctrl + ← Focus into previous editor group
Ctrl+K Ctrl + → Focus into next editor group
Ctrl+Shift+PgUp Move editor left
Ctrl+Shift+PgDn Move editor right
Ctrl+K ← Move active editor group left/up
Ctrl+K → Move active editor group right/down

File management

Ctrl+N New File
Ctrl+O Open File…
Ctrl+S Save
Ctrl+Shift+S Save As…
Ctrl+W Close
Ctrl+K Ctrl+W Close All
Ctrl+Shift+T Reopen closed editor
Ctrl+K Enter Keep preview mode editor open
Ctrl+Tab Open next
Ctrl+Shift+Tab Open previous
Ctrl+K P Copy path of active file
Ctrl+K R Reveal active file in Explorer
Ctrl+K O Show active file in new window/instance

Debug

F9 Toggle breakpoint
F5 Start / Continue
F11 / Shift+F11 Step into/out
F10 Step over
Shift+F5 Stop
Ctrl+K Ctrl+I Show hover
Integrated terminal
Ctrl+` Show integrated terminal
Ctrl+Shift+` Create new terminal
Ctrl+Shift+C Copy selection
Ctrl+Shift+V Paste into active terminal
Ctrl+Shift+ ↑ / ↓ Scroll up/down
Shift+ PgUp / PgDn Scroll page up/down
Shift+ Home / End Scroll to top/bottom

Download Visual Studio Code Cheet Sheet : https://code.visualstudio.com/shortcuts/keyboard-shortcuts-linux.pdf

Generating a new SSH key


Generating a new SSH key

  1. Open Terminal.
  2. Paste the text below, substituting in your GitHub email address.
    $ ssh-keygen -t rsa -b 4096 -C "your_email@example.com"

    This creates a new ssh key, using the provided email as a label.

    > Generating public/private rsa key pair.
  3. When you’re prompted to “Enter a file in which to save the key,” press Enter. This accepts the default file location.
    > Enter a file in which to save the key (/home/you/.ssh/id_rsa): [Press enter]
  4. At the prompt, type a secure passphrase. For more information, see “Working with SSH key passphrases”.
    > Enter passphrase (empty for no passphrase): [Type a passphrase]
    > Enter same passphrase again: [Type passphrase again]

aryan@aryan-VirtualBox:~$ cd .ssh
bash: cd: .ssh: No such file or directory
aryan@aryan-VirtualBox:~$ ssh-keygen -t rsa -b 4096 -C  aryan@xxxx.com
Generating public/private rsa key pair.
Enter file in which to save the key (/home/aryan/.ssh/id_rsa): 
Created directory '/home/aryan/.ssh'.
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in /home/aryan/.ssh/id_rsa.
Your public key has been saved in /home/aryan/.ssh/id_rsa.pub.
The key fingerprint is:

Adding your SSH key to the ssh-agent

Before adding a new SSH key to the ssh-agent to manage your keys, you should have checked for existing SSH keys and generated a new SSH key.

  1. Start the ssh-agent in the background.
    $ eval "$(ssh-agent -s)"
    > Agent pid 59566
  2. Add your SSH private key to the ssh-agent. If you created your key with a different name, or if you are adding an existing key that has a different name, replace id_rsa in the command with the name of your private key file.
    $ ssh-add ~/.ssh/id_rsa

Git Interview Questions


Git Exam Questions and answers

Which of the following should be done after installing Git on a system for the first time? (Choose all that apply)

– git config –global user.name “”
– git config –global user.email
Which Git command is used to stage changes for a commit?
– git add is used to stage changes for a commit.
What command is used to get changes into a remote repo?
– git push

What does the git checkout feature1 command do?
– It checks out a branch called feature1.

Git is an example of what type of tool?
– Source Control Management (SCM)
What is one way to configure a Git installation to authenticate with a remote repository like github.com?
– Upload a public ssh key to your github.com account.

Which command is used to obtain a local copy of a Git repository?
– git clone

Git Status, Git Commit, Git Add


To Edit File in Git

GitAddChange
cd to directory: vi views/index.jade (File Name)
Edit the file in VI Editor and save :qw!

To see Status: git status

# On branch master
# Changes to be committed:
# (use “git reset HEAD <file>…” to unstage)
#
# modified: views/index.jade
#

To Commit

git commit -m “change header text

[master 43185e0] change header text
1 file changed, 2 insertions(+), 2 deletions(-)

 

Setting up Priate Key Access


Setting up Priate Key Access\

An easy way to authenticate with remote git server like GitHub is to use an ssh key pair.

On a CentOs environment, you can generate an ssh key pair like this
ssh-keygen -t rsa -b 4096

Setting up Priate Key Access

After generating the key pair, copy the contents of ~/.ssh/id_rsa.pub.

[root@aryan-34252e5f2 ~]# ssh-keygen -t rsa -b 4096
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:mTVGOKHkJ7uWbiDVtm0cecEJfTEH53g1mnu8VsPnif4 root@aryan-34252e5f2.mylabserver.c om
The key’s randomart image is:
+—[RSA 4096]—-+
| . o*..+oo..|
| o .o.= .*o..|
| .+ .o+o.oo |
| . o+o=.. .+ |
| . ..+So . =o|
| . . .o+ o.*|
| . .+. . +.|
| o. . . |
| .. ..E |
+—-[SHA256]—–+