Find regular expression patterns in tar archive files. More information: https://manned.org/ptargrep.
ptargrep "{{search_pattern}}" {{path/to/file1 path/to/file2 ...}}
ptargrep {{[-b|--basename]}} "{{search_pattern}}" {{path/to/file}}
ptargrep {{[-i|--ignore-case]}} "{{search_pattern}}" {{path/to/file}}