Text editors

1.       nano
Ø  nano -: to start nano text editor
Ø  ctrl+x -: to exit from nano text editor. Then press “y” & give a name with file format to save the file.

2.       touch
Ø  touch filename.fileFormat -: to create a new text file

3.       more
Ø  more filename.fileFormat -: to view the text file

4.       cat
Ø  cat filename.fileFormat -: to view the text file
Ø  cat -n filename.fileFormat -: to display the content with the line number
Ø  cat *.fileFormat -: to view the all text files’ contents.
Ø  cat >filename.fileFormat
                  press enter
                  type file content
                  press enter
                  ctrl+d -: to create a text file
Ø  cat file1name.fileFormat file2name.fileFormat >filename3.fileFormat  -: concatenate existing 2 files and create new file
Ø  cat filename2.fileFormat >filename1.fileFormat  -: to copy the content of file2 to file1
Ø  cat filename1.fileFormat >>filename2.fileFormat  -: to append the contents from file1 to file2

5.       vi – commands are case sensitive
I.            Command mode
Ø  vi fileName.fileFormat  -: to create a text file.
II.            To switch between 2 modes press “i”.
III.            Insert mode
Ø  Enter the content

Editing Commands
i	Insert at cursor
a	Write after cursor
A	Write at the end of line
ESC	Terminate insert mode
u	Undo last change
U	Undo al changes to the entire line
o	Open a new line
dd 3dd	Delete line Delete 3 lines
D	Delete contents of line after the cursor
C	Delete contents of a line after the cursor and insert new text. Press “Esc” to end insertion.
dw 4dw	Delete word Delete 4 words
cw	Change a word
x	Delete character at the cursor
r	Replace character
R	Overwrite characters from cursor onward
s	Substitute one character under cursor continue to insert
S	Substitute entire line and begin to insert at the beginning of the line
~	Change case of individual character
Commands for moving within a file
k	Move cursor up
j	Move cursor down
h	Move cursor left
I	Move cursor right
Commands for saving and closing the file
Shift+zz	Save the file and quit
:w	Save the file while opened
:q	Quit without saving
:wq	Save the file and quit