sh256

commit abed125366b4142a6dacadcc4b947813ca6551cf
Author: Cem Keylan <cem@ckyln.com>
Date:   Mon,  5 Oct 2020 19:21:00 +0300

initial commit

Diffstat:
A
LICENSE
 | 
5
+++++
A
Makefile
 | 
28
++++++++++++++++++++++++++++
A
README.md
 | 
19
+++++++++++++++++++
A
sha256
 | 
11
+++++++++++

4 files changed, 63 insertions(+), 0 deletions(-)
diff --git a/LICENSE b/LICENSE
@@ -0,0 +1,5 @@
+sh256 is in the public domain.
+
+To the extent possible under law, Cem Keylan <cem@ckyln.com> has waived all
+copyright and related or neighbouring rights to this work.
+https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/Makefile b/Makefile
@@ -0,0 +1,28 @@
+PREFIX = /usr/local
+BINDIR = ${PREFIX}/bin
+
+DIGESTEXTRA = \
+	      md5 \
+	      sha1 \
+	      sha224 \
+	      sha3 \
+	      sha384 \
+	      sha512
+
+all:
+	@echo Run \'make install\' to install
+
+install:
+	mkdir -p ${DESTDIR}${BINDIR}
+	cp sha256 ${DESTDIR}${BINDIR}
+	chmod 755 ${DESTDIR}${BINDIR}/sha256
+	for bin in ${DIGESTEXTRA}; do \
+		ln -sf sha256 ${DESTDIR}${BINDIR}/$${bin}; \
+		done
+
+uninstall:
+	for bin in sha256 ${DIGESTEXTRA}; do \
+		rm -f ${DESTDIR}${BINDIR}/$${bin}; \
+		done
+
+.PHONY: all install uninstall
diff --git a/README.md b/README.md
@@ -0,0 +1,19 @@
+SH256
+=====
+
+Tiny shell script to create BSD-style digests using coreutils-style digest
+programs. It isn't specific to sha256(1), it calls the digest necessary digest
+program depending on its own name. The Makefile handles all of it anyway.
+
+E.g.
+  sha256 -> sha256sum
+  md5    -> md5sum
+
+
+Installation
+------------
+
+The program can be installed by running:
+
+     make install
+
diff --git a/sha256 b/sha256
@@ -0,0 +1,11 @@
+#!/bin/sh -e
+# Shell script to create BSD style digests using coreutils style digest
+# programs. Calls the digest program according to its own name.
+# So, sha256 -> sha256sum, md5 -> md5sum. This makes it easier to symlink and
+# use it multifunctionally.
+
+case "$1" in --) ;; -*|'') printf 'usage: %s [file...]\n' "${0##*/}"; exit 0; esac
+
+"${0##*/}sum" "$@" | while read -r digest file; do
+    printf '%s (%s) = %s\n' "$(printf "${0##*/}" | tr [:lower:] [:upper:])" "$file" "$digest"
+done