From 4e0d4441bb5613fb09cf772f7bcf7beb15337443 Mon Sep 17 00:00:00 2001
From: Thomas Voss <mail@thomasvoss.com>
Date: Tue, 22 Aug 2023 16:14:23 +0300
Subject: Genesis commit

---
 LICENSE   | 14 ++++++++++++++
 Makefile  | 15 +++++++++++++++
 README.md | 22 ++++++++++++++++++++++
 mkpass    | 21 +++++++++++++++++++++
 mkpass.1  | 61 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 133 insertions(+)
 create mode 100644 LICENSE
 create mode 100644 Makefile
 create mode 100644 README.md
 create mode 100755 mkpass
 create mode 100644 mkpass.1

diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..276994d
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,14 @@
+BSD Zero Clause License
+
+Copyright © 2023 Thomas Voss
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+PERFORMANCE OF THIS SOFTWARE.
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..1fb7450
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,15 @@
+.POSIX:
+
+target = mkpass
+
+PREFIX  = /usr/local/bin
+DPREFIX = ${DESTDIR}${PREFIX}
+
+all: ${target}
+${target}:
+	chmod +x $@
+
+install:
+	mkdir -p ${DPREFIX}/bin ${DPREFIX}/man/man1
+	cp ${target}   ${DPREFIX}/bin
+	cp ${target}.1 ${DPREFIX}/man/man1
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..790935a
--- /dev/null
+++ b/README.md
@@ -0,0 +1,22 @@
+# mkpass
+
+`mkpass` is a CLI utility to generate passwords from the command\-line.  All
+random characters are generated by `/dev/urandom`.
+
+By default passwords are 64 characters long and may contain any printable ASCII
+character.  If you would like to specify the password length, you can use the
+`-l` command\-line option.  If you would like to specify the set of characters
+to use in the password, you can provide a set of characters or a range in the
+same form as `tr(1)`.
+
+For example to generate a 40 character long password containing only the numbers
+0–9 and the uppercase-characters A–F:
+
+    $ mkpass -l 40 0-9A-F
+    379A2E98B2BE03A5F4B2F5AC39F4FD8429B2CAFD
+
+## Installation
+
+Installation is easy by using the provided Makefile:
+
+    $ sudo make install
diff --git a/mkpass b/mkpass
new file mode 100755
index 0000000..d1acc08
--- /dev/null
+++ b/mkpass
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+set -e
+
+usage() {
+	echo "Usage: ${0##*/} [-n] [-l length] [chars]" >&2
+	exit 1
+}
+
+while getopts 'l:n' o; do
+	case "$o" in
+	l) len="$OPTARG" ;;
+	n) nnl=false     ;;
+	*) usage         ;;
+	esac
+done
+
+shift $((OPTIND - 1))
+[ $# -gt 1 ] && usage
+</dev/urandom tr -dc -- "${1:-[:graph:]}" | head -c "${len:-64}"
+${nnl:-true} && echo
diff --git a/mkpass.1 b/mkpass.1
new file mode 100644
index 0000000..84c269f
--- /dev/null
+++ b/mkpass.1
@@ -0,0 +1,61 @@
+.Dd $Mdocdate: August 22 2023 $
+.Dt MKPASS 1
+.Os
+.Sh NAME
+.Nm mkpass
+.Nd make a password
+.Sh SYNOPSIS
+.Nm
+.Op Fl n
+.Op Fl l Ar length
+.Op Ar chars
+.Sh DESCRIPTION
+The
+.Nm
+utility allows you to easily create randomly\-generated passwords from the
+command\-line.
+By default,
+.Nm
+generates a 64\-character long password of printable characters.
+If specified, the generated password will only contain characters found in
+.Ar chars .
+You may use
+.Xr tr 1
+range syntax, as shown in the
+.Sx EXAMPLES
+section.
+.Pp
+The options are as follows:
+.Bl -tag width Ds
+.It Fl n
+Do not print a trailing newline after the generated password.
+.It Fl l Ar length
+Generate a password
+.Ar length
+characters in length.
+.El
+.Sh EXIT STATUS
+.Ex -std
+.Sh EXAMPLES
+.Pp
+Generate a password:
+.Pp
+.Dl $ mkpass
+.Pp
+Generate a password with a length of 40:
+.Pp
+.Dl $ mkpass -l 40
+.Pp
+Generate an alphanumeric password:
+.Pp
+.Dl $ mkpass '[:alnum:]'
+.Pp
+Generate a password containing only the lowercase letters of the latin alphabet:
+.Pp
+.Dl $ mkpass a-z
+.Sh SEE ALSO
+.Xr head 1 ,
+.Xr totp 1 ,
+.Xr tr 1
+.Sh AUTHORS
+.An Thomas Voss Aq Mt mail@thomasvoss.com
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