rust-grep

Recreating basic grep functionalities in Rust. Exercise part of The Rust Book.

Building

To build this program you will need to have installed the Rust Programming Language. For a tutorial on this, check https://www.rust-lang.org/tools/install.

Running cargo build --release will build the binary in the target/release directory. Alternatively, you can build the binary and run it at the same time using cargo run --release.

Usage

./rust-grep query [file name]

• query - The query that will be searched for in the specified stream.
• [file name] - OPTIONAL - If specified, the program will search for the query in the given file. If not, the program will search the query in the terminal's standard output.
• If the CASE_INSENSITIVE environment variable is set, the program will search for the query as case insensitive.

Examples:

• ./rust-grep "nevermore" theraven.txt
• cat theraven.txt | ./rust-grep "nevermore"
• CASE_INSENSITIVE=1 ./rust-grep raven theraven.txt