sed vs tail-cut benchmark

README.md

sed vs tail-cut Benchmark

Benchmark to compare the performance of either using sed or tail and cut to modify input.

Usage

Running the following command will run the benchmark.

bash run_benchmarks.sh # or bash ./run_benchmarks.sh

Scripts being tested

The 2 following scripts achieve the same result of removing the first 2 lines of input and then removing everything after (and including) the first space on each remaining line. However, one uses sed while the other uses a combo of tail and cut.

• sed '1,2d; s/ .*//' "$1"

• tail -n +3 "$1" | cut -d ' ' -f1

benchmark_sed.sh

#!/usr/bin/env bash

benchmark_sed() {
    time for i in {1..5000}; do
        sed '1,2d; s/ .*//' "$1" > /dev/null
    done
}

benchmark_sed "$1"

benchmark_tailcut.sh

#!/usr/bin/env bash

benchmark_tailcut() {
    time for i in {1..5000}; do
        tail -n +3 "$1" | cut -d ' ' -f1 > /dev/null
    done
}

benchmark_tailcut "$1"

input.txt

Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example
Line 1
Line 2
Hello World
Sample text
Another example

LICENSE.txt

Copyright 2024 Snap <https://github.com/SnapperGee>

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

run_benchmarks.sh

#!/usr/bin/env bash

DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

INPUT="$DIR/input.txt"

printf 'sed:\n------------------'
source "$DIR/benchmark_sed.sh" "$INPUT"

printf '\ntail-cut:\n------------------'
source "$DIR/benchmark_tailcut.sh" "$INPUT"