How to cat a single file’s content from a tar without unpacking it on Linux? For example, I know there is a file README.txt in a tar tools.tar.gz . How to cat the content of README.txt out?
You can do this by using a combination of
tar‘s options and arguments.
-O, --to-stdout Extract files to standard output.
-x Extract files from an archive. Arguments are optional. When given, they specify names of the archive members to be extracted.
An example usage as follows.
$ tar -xOf tools.tar.gz README.txt Sun 09 Aug 2020 01:03:57 PM HKT
tar print to STDOUT,
-x to extract files, and
README.txt to specify only extract the file under this path.