Add all the
*.txt files in a directory to the existing
You can use this short tar command.
tar -rvf files.tar ./my-directory/**/*.txt
Or this more verbose tar command.
tar --append --verbose --file files.tar ./my-directory/**/*.txt
**/*.txt format does the recursion. Ie. finding all the
.txt files at any level in the directory structure before appending them to the archive.
Note: There are alternative ways to build a list of files by filetype using the
find command and then piping that into
tar. However, if you want to achieve this with tar only, the above command should work on your tar implementation.
--appendtells tar to append to an existing archive
--verbosetells tar to produce verbose output
--filetells tar that the next parameter will be the tar file to create, extract, append to, list, etc.