dcat

Implementation cat unix tools using pure C programming language. (Just a draft tool for Donya OS)

Features

• Tiny code
• Good performance
• Support most features of unix cat tool
• Concatenation some files to one output
• Read from STDIN
• Depends on glibc

Help

Usage: dcat [OPTION]... [FILE]...
Concatenate FILE(s) to standard output.

With no FILE, or when FILE is -, read standard input.

-l, --learn              learn and read offline documentation
-A, --show-all           equivalent to -vET
-b, --number-nonblank    number nonempty output lines, overrides -n
-e                       equivalent to -vE
-E, --show-ends          display $ at end of each line
-n, --number             number all output lines
-s, --squeeze-blank      suppress repeated empty output lines
-t                       equivalent to -vT
-T, --show-tabs          display TAB characters as ^I
-u                      (ignored)
-v, --show-nonprinting   use ^ and M- notation, except for LFD and TAB
--help     display this help and exit
--version  output version information and exit

Examples:
dcat f - g  Output f's contents, then standard input, then g's contents.
dcat        Copy standard input to standard output.

Programming by Max Base
Full documentation at: <https://github.com/basemac/dcat>
or available locally via: 'dcat --learn'

Using

max@base:~/Desktop$ ./dcat -n dcat.c

option -n

Reading donya_cat.c
     1	/     1	*
     2	 * @Name: dcat: cat - Donya OS
     3	 * @Author: Max Base
     4	 * @Repository: github.com/basemax/dcat
     5	 * @Date: 2020-07-11
     6	*/
...

max@base:~/Desktop$ ./dcat dcat.c

Reading donya_cat.c
/*
 * @Name: dcat: cat - Donya OS
 * @Author: Max Base
 * @Repository: github.com/basemax/dcat
 * @Date: 2020-07-11
*/
...

Version

dcat (Donya OS) 1.0
Copyright (C) 2020 Max Base.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by Max Base.

What's cat?

cat is a standard Unix utility that reads files sequentially, writing them to standard output.

The name is derived from its function to concatenate files.

Read more about cat at https://en.wikipedia.org/wiki/Cat_(Unix)

Build and Compile

git clone https://github.com/BaseMax/dcat
cd dcat
gcc dcat.c -o dcat -O3
./dcat --version

TODO

All features not ready:

• -s
• -b
• -v
• ...

I accept your contribute or help to develop this tool.

More than 10 similar software

You can read read and learn from these:

• https://gist.github.com/pete/665971
• https://github.com/Stichting-MINIX-Research-Foundation/minix/blob/master/bin/cat/cat.c
• https://opensource.apple.com/source/text_cmds/text_cmds-71/cat/cat.c
• https://github.com/coreutils/coreutils/blob/master/src/cat.c

---

Max Base

My nickname is Max, Programming language developer, Full-stack programmer. I love computer scientists, researchers, and compilers. (Max Base)

Asrez Team

A team includes some programmer, developer, designer, researcher(s) especially Max Base.

Asrez Team