GNU grep implemented in Rust
First, clone this repository:
git clone https://github.com/stevekm/grep.git
cd grep
If rustup is not already installed, install it with curl https://sh.rustup.rs -sSf | sh.
Build the program with cargo build.
The Makefile includes some example methods to run the program; make run.
By default the program reads from stdin.
$ printf 'foo\nbar\nbaz\n' | target/debug/grep bar
bar
A file can also be passed
$ target/debug/grep 5 data.txt
5
15
Lines preceeding and following a match can be printed
$ target/debug/grep -A 1 -B 2 5 data.txt
--
3
4
5
6
--
--
13
14
15
16
--