tac is a high-performance, cross-platform rewrite of the GNU tac utility of Coreutils.
This tac implementation uses memory-mapped files on all supported operating systems and is written in rust for maximum integrity and safety.
``` Usage: tac [OPTIONS] [FILE1..] Write each FILE to standard output, last line first. Reads from STTDIN if no file is specified.
Options: -v --version: Print version and exit. -h --help : Print this help text and exit ```
tac reads lines from any combination of stdin and/or zero or more files and writes the lines to the output in reverse order.
Since tac is implemented via memory-mapped files, there is no limit on line length and no danger of memory exhaustion.
tac may be installed via cargo, the rust package manager:
cargo install tac
tac is written by Mahmoud Al-Qudsi <mqudsi@neosmart.net> of NeoSmart Technologies, and released under the terms of the MIT public license. Copyright NeoSmart Technologies 2017. All rights not assigned by the MIT license are reserved.