man page and makefile

Makefile

@@ -0,0 +1,15 @@
+PREFIX ?= /usr
+MANDIR ?= $(PREFIX)/share/man
+
+all:
+	echo Run \'make install\' to install cawk.
+
+install:
+	mkdir -p $(DESTDIR)$(PREFIX)/bin
+	mkdir -p $(DESTDIR)$(MANDIR)/man1
+	cp -p cawk $(DESTDIR)$(PREFIX)/bin/cawk
+	cp -p cawk.1 $(DESTDIR)$(MANDIR)/man1
+
+uninstall:
+	rm -rf $(DESTDIR)$(PREFIX)/bin/cawk
+	rm -rf $(DESTDIR)$(MANDIR)/man1/cawk.1*

README.md

@@ -1,20 +1,54 @@
 # cawk
 
-REPL calculator in Bash and AWK
+REPL calculator in Bash and GNU awk
 
+## Usage
+
+```
+cawk [-f PRECISION]                 - Start in REPL mode.
+cawk -e EXPRESSION [-f PRECISION]   - Eval EXPRESSION and quit.
+COMMAND | cawk [-f PRECISION]       - Eval expressions from COMMAND output.
+cawk [-f PRECISION] < FILE
+```
+
+### Options
+
+```
+-e EXPRESSION   Expression to evaluate.
+-f PRECISION    Number of positions after decimal point.
+```
+
+### Commands (in REPL mode)
+
+```
+  f PRECISION   Redefine precision.
+  h or ?        Help.
+  q or quit     Exit.
+```
+
+## Depends
+
+- Bash 5+
+- GNU awk
+
+## Install
+
+Clone this repository:
+
+```
+:~$ git clone https://git.blauaraujo.com/blau_araujo/cawk.git
 ```
-USAGE
-  cawk [-f PRECISION]                 - Start in REPL mode.
-  cawk -e EXPRESSION [-f PRECISION]   - Eval EXPRESSION and quit.
-  COMMAND | cawk [-f PRECISION]       - Eval expressions from COMMAND output.
 
-OPTIONS
-  -e EXPRESSION   Expression to evaluate.
-  -f PRECISION    Number of positions after decimal point.
+As root, enter `cawk` directory and run:
 
-COMMANDS
-  f[0-9]    Redefine precision.
-  h|?       Help.
-  q|quit    Quit.
 ```
+make install
+```
+
+## Uninstall
+
+As root, enter `cawk` directory and run:
 
+```
+make uninstall
+```

cawk.1

@@ -0,0 +1,51 @@
+.TH CAWK "1" "Mar 2022" "CAWK 0.0.1" "REPL calculator in Bash and GNU awk"
+.\" Text automatically generated by txt2man
+.RS
+.SH NAME
+\fBcawk \fP- REPL calculator in Bash and GNU awk.
+.SH SYNOPSIS
+.nf
+.fam C
+ \fBcawk\fP [-f PRECISION]
+ \fBcawk\fP -e EXPRESSION [-f PRECISION]
+ COMMAND | \fBcawk\fP [-f PRECISION]
+ \fBcawk\fP [-f PRECISION] < FILE
+.fam T
+.fi
+.fam T
+.fi
+.SH DESCRIPTION
+When executed whith no arguments, or just with the optional \fB-f\fP PRECISION, \fBcawk\fP enter in REPL mode (\fBR\fPead \fBE\fPval \fBP\fPrint \fBL\fPoop). With \fB-e\fP option, EXPRESSION is evaluated and \fBcawk\fP exits. Expressions lists can also be passed by pipe, here strings, or files (via shell redirection for reading).
+.SH OPTIONS
+.TP
+\fB-e EXPRESSION\fP
+
+Expression to evaluate.
+.TP
+\fB-f PRECISION\fP
+
+Number of positions after decimal point.
+.SH COMMANDS (REPL mode)
+.TP
+\fBf NUMBER\fP
+
+Redefine precision.
+.TP
+\fBh\fP or \fB?\fP
+
+Help.
+.TP
+\fBq\fP or \fBquit\fP
+
+Exit.
+.SH REPORTING BUGS
+https://git.blauaraujo.com/blau_araujo/cawk/issues
+.SH AUTHORS
+Written by Blau Araujo <blau@debxp.org>
+.SH COPYRIGHT
+Copyright©2022, Blau Araujo.
+.PP
+License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
+.PP
+This is free software: you are free to change and redistribute it. There is NO
+WARRANTY, to the extent permitted by law.