Linux compression commands and vim editing instructions

Cat command

Implement merging of several files, and add one or several files to another file.

Tar command

Package a file or directory into a file

-C Create a new tar file

-t lists the directory names in the tar file

-V displays detailed file or directory information for packaged files

-X extracting a file from a tar file

-F archive file or device, usually write

-Z uses the GZIP algorithm to compress packaged files

-j using the bZIP algorithm to compress packaged files

-C back to the location of the extracted files

VI Editor

Contains three modes, command mode, edit mode, extended mode.

Enter edit mode from command mode,

A: Enter insert mode and add after the cursor.
I: Enter the insert mode and insert it before the cursor.
O: Enter insert mode and open a new line below the current (cursor) line.

Number 0, moving to the beginning of the current line

$, moving to the end of the current line.

Linux compression commands and vim editing instructions