Crate libaki_unbody

source ·
Expand description

output first or last n lines, like a head and tail of linux command.

§Features

  • output first or last n lines, like a head and tail of linux command.
  • minimum support rustc 1.58.1 (db9d1b20b 2022-01-20)

§Command help

aki-unbody --help

Usage:
  aki-unbody [options]

output first or last n lines, like a head and tail of linux command.

Options:
  -h, --head <num>      output the first <num> lines.
  -t, --tail <num>      output the last <num> lines.
  -i, --inverse         output the body, except for head and tail.

  -H, --help        display this help and exit
  -V, --version     display version information and exit

Examples:
  Outputs first 2 lines:
    cat file1.txt | aki-unbody --head 2
  Outputs last 2 lines:
    cat file1.txt | aki-unbody --tail 2
  Outputs body, except for first 2 lines and last 2 lines:
    cat file1.txt | aki-unbody --head 2 --tail 2 --inverse

§Quick install

  1. you can install this into cargo bin path:
cargo install aki-unbody
  1. you can build debian package:
cargo deb

and install .deb into your local repository of debian package.

§Examples

The input data used in this example looks like this:

cat file1.txt

result output:

LN:0001,text
LN:0002,text
LN:0003,text
LN:0004,text
LN:0005,text
LN:0006,text

§Example 1: output head

Outputs first 2 lines.

command line:

cat file1.txt | aki-unbody --head 2

result output:

LN:0001,text
LN:0002,text

§Example 2: output tail

Outputs last 2 lines.

command line:

cat file1.txt | aki-unbody --tail 2

result output:

LN:0005,text
LN:0006,text

§Example 3: output head and tail

Outputs first 2 lines and last 2 lines.

command line:

cat file1.txt | aki-unbody --head 2 --tail 2

result output:

LN:0001,text
LN:0002,text
LN:0005,text
LN:0006,text

§Example 4: output body, except for head and tail

Outputs body, except for first 2 lines and last 2 lines.

command line:

cat file1.txt | aki-unbody --head 2 --tail 2 --inverse

result output:

LN:0003,text
LN:0004,text

§Library example

See fn execute() for this library examples.

Functions§