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First understand the different front-end components in JupyterLab

Executing the terminal commands

Terminal commands can be execute by typing ! before a command.

!ls     #prints the files in present working directory
!whoami #prints the userName

Shortcut keys (Generic)

shift + enter       # run the selected cell, select below
control + enter     # run the selected cells
alt + enter         # run the selected cell, insert below (a new cell will be created below cell)
control + s         # Save the current state

ESC + H                   # show all short cuts
ESC + A                   # Insert cell above
ESC + B                   # Insert cell below
ESC + X                   # Cut the selected cell
ESC + C                   # Copy the selected cell
ESC + V                   # Paste the cells

ESC + Y                   # Change the cell type to CODE
ESC + M                   # Change the cell type to MARKDOWN
ESC + P                   # Open Command palette (Very handy command)

Shortcut keys (Coding)

shift + tab         # Tool tip
shift + R           # Restart kernal and run all cells

control + [         # dedent    (moves the text a tab space to left)
control + ]         # indent    (moves the text a tab space to right)
control + shift + left arrow    # Collapse all cells
control + shift + right arrow   #Uncollapse all cells