Unix /bin/cat like - concatenate files and print out the standard output!
Neko is a very fast and lightweight implementaion of the cat
utility, written in V.
Even though neko does a lot of checks and replacements, it still performs toe-to-toe with GNU cat
❯ time (for i in {1..10}; do neko LICENSE > /dev/null; done)
0.03s user 0.02s system 11% cpu 0.430 total
❯ time (for i in {1..10}; do cat LICENSE > /dev/null; done)
0.01s user 0.02s system 84% cpu 0.030 total
# Clone the repo
git clone https://github.com/hellisabove/normal-neko.git
# build
cd neko && v -prod .
neko -- concatenate files and print ouy the standard output
neko [-benst] [file..] [-(stdin)]
The neko utility reads files sequentially, writing them to the standard output. The file operands are processed in command-line order. If file is a single dash (‘-’) or absent, neko reads from the standard input.
The Options are as follows
| Option | Description |
|---|---|
-b |
Number the lines, but don't count blank lines. |
-e |
Print a dollar sign (‘$’) at the end of each line. Implies the -v option to display non-printing characters. |
-n |
Number the output lines, starting at 1. |
-s |
Squeeze multiple adjacent empty lines, causing the output to be single spaced. |
-t |
Print tab characters as ^I. Implies the -v option to display non-printing characters. |
-u |
The output is guaranteed to be unbuffered (unimplemented) |
-v |
Displays non-printing characters so they are visible (unimplemented) |
The neko utility exits 0 on success, and >0 if an error occurs.
- Sequentially print the contents of
file1andfile2to the filefile3, truncatingfile3if it already exists. See the manual page for your shell (e.g., sh(1)) for more information on redirection.
❯ neko file1 file2 > file3- Print the contents of
file1, print data it receives from the standard input until it receives anEOF(‘^D’) character, print the contents offile2, read and output contents of the standard input again, then finally output the contents offile3.
❯ neko file1 - file2 - file3-vflag is not POSIX standard. As such, there are no plans to implement it
A Lot of the README.md was taken from Openbsd's cat(1) man page
Flinner for creating neko