Question: tar cvf how to use?
Answer: 1) Extract a tar.gz archive. ...  2) Extract files to a specific directory or path. ...  3) Extract a single file. ...  4) Extract multiple files using wildcards. ...  5) List and search contents of the tar archive. ...  6) Create a tar/tar.gz archive. ...  7) Permission before adding files. ...  8) Add files to existing archives.