{
    "version": "https://jsonfeed.org/version/1.1",
    "user_comment": "This feed allows you to read the posts from this site in any feed reader that supports the JSON Feed format. To add this feed to your reader, copy the following URL -- https://matoken.org/blog/tag/base91/feed/json -- and add it your reader.",
    "home_page_url": "https://matoken.org/blog/tag/base91",
    "feed_url": "https://matoken.org/blog/tag/base91/feed/json",
    "language": "ja",
    "title": "basE91 – matoken's blog",
    "description": "Is there no plan B?",
    "icon": "https://matoken.org/blog/wp-content/uploads/2025/03/cropped-1865f695c4eecc844385acef2f078255036adccd42c254580ea3844543ab56d9.jpeg",
    "items": [
        {
            "id": "http://matoken.org/blog/?p=2850",
            "url": "https://matoken.org/blog/2020/07/31/converting-binary-to-text-with-base91-a-little-more-efficiently/",
            "title": "basE91\u3067\u5c11\u3057\u52b9\u7387\u3088\u304f\u30d0\u30a4\u30ca\u30ea\u3092\u30c6\u30ad\u30b9\u30c8\u306b\u5909\u63db",
            "content_html": "<div class=\"paragraph\">\n<p>\u30d0\u30a4\u30ca\u30ea\u3092\u5229\u7528\u3067\u304d\u306a\u3044\u74b0\u5883\u3067\u306e\u30c7\u30fc\u30bf\u8ee2\u9001\u6642\u306bUNIX\u74b0\u5883\u3067\u306f\u53e4\u304f\u306f <code>uudecode, uuencode</code> \u304c\uff0c\u65e5\u672c\u306e\u30d1\u30bd\u30b3\u30f3\u901a\u4fe1\u3067\u306f <code>ish</code> \u306a\u3069\u304c\u4f7f\u308f\u308c\u3066\u3044\u307e\u3057\u305f\uff0e\u8fd1\u9803\u306f <code>base64</code> \u304c\u3088\u304f\u4f7f\u308f\u308c\u3066\u3044\u308b\u3088\u3046\u306b\u611f\u3058\u307e\u3059\uff0e</p>\n</div>\n<div class=\"paragraph\">\n<p>\u3053\u308c\u3089\u306e\u30c4\u30fc\u30eb\u3067\u306f\u30d0\u30a4\u30ca\u30ea\u3092ASCII\u3067\u8868\u73fe\u3059\u308b\u305f\u3081\u30b5\u30a4\u30ba\u304c\u5927\u304d\u304f\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\uff0e\u3067\u3082\u5168\u3066\u306eASCII\u3092\u4f7f\u3063\u3066\u3044\u307e\u305b\u3093\uff0e</p>\n</div>\n<div class=\"paragraph\">\n<p>\u4eca\u56de\u898b\u3064\u3051\u305fbasE91\u306fASCII\u306e0x21-0x7E\u306e\u3046\u3061 <code>-</code>, <code>\\</code>, <code>'</code> \u3092\u9664\u3044\u305f91\u6587\u5b57\u3092\u4f7f\u3063\u3066\u30c7\u30b3\u30fc\u30c9\u3059\u308b\u3053\u3068\u3067\u52b9\u7387\u3088\u304f\u3059\u308b\u3082\u306e\u306e\u3088\u3046\u3067\u3059\uff0e</p>\n</div>\n<div class=\"ulist\">\n<ul>\n<li><a href=\"http://base91.sourceforge.net/\">basE91 &#8211; binary to ASCII text encoding</a></li>\n</ul>\n</div>\n<div class=\"paragraph\">\n<p>\u65e9\u901f\u8a66\u3057\u3066\u307f\u307e\u3059\uff0eDebian\u30d1\u30c3\u30b1\u30fc\u30b8\u304c\u306a\u3044\u304b\u306a\u3068\u63a2\u3057\u307e\u3057\u305f\u304c\u3042\u308a\u307e\u305b\u3093\u3067\u3057\u305f\uff0e</p>\n</div>\n<div class=\"paragraph\">\n<p>(\u4ee5\u524d\u8981\u671b\u3055\u308c\u305f\u3053\u3068\u306f\u3042\u308b\u3088\u3046 <a href=\"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=706078\">#706078 &#8211; RFP: base91\u2009\u2014\u2009base91 encoder/decoder &#8211; Debian Bug report logs</a> )</p>\n</div>\n<div class=\"paragraph\">\n<p>source\u3092\u8cb0\u3063\u3066\u304d\u3066make\u3057\u307e\u3059\uff0e<br />\n\u203bhash\u306f\u300c <a href=\"https://sourceforge.net/projects/base91/files/basE91/0.6.0/\">basE91 &#8211; Browse /basE91/0.6.0 at SourceForge.net</a> \u300d\u3067\u78ba\u8a8d\u3067\u304d\u308b\uff0e</p>\n</div>\n<div class=\"listingblock shell\">\n<div class=\"content\">\n<pre class=\"highlight\"><code>$ wget http://downloads.sourceforge.net/base91/base91-0.6.0.tar.gz\n$ md5sum base91-0.6.0.tar.gz\ne227841d900cc463a162bd79775aeb54  base91-0.6.0.tar.gz\n$ sha1sum base91-0.6.0.tar.gz\n00cfd573ec8b3d0160dbf53e2c7a49b99a1aa720  base91-0.6.0.tar.gz\n$ tar tvf base91-0.6.0.tar.gz\n-rw-r--r-- 0/0             575 2005-06-25 00:00 base91-0.6.0/AWK/README\n-rwxr-xr-x 0/0             727 2006-11-02 05:13 base91-0.6.0/AWK/b91dec.awk\n-rw-r--r-- 0/0             932 2006-09-04 03:00 base91-0.6.0/PHP4/README\n-rw-r--r-- 0/0            1513 2006-11-02 05:13 base91-0.6.0/PHP4/base91.php\n-rw-r--r-- 0/0             149 2006-09-04 03:00 base91-0.6.0/test/Makefile\n-rw-r--r-- 0/0            4265 2006-11-02 05:13 base91-0.6.0/test/test.sh\n-rw-r--r-- 0/0             332 2006-08-25 17:00 base91-0.6.0/DOS-asm/readme.txt\n-rw-r--r-- 0/0            3487 2006-11-02 05:13 base91-0.6.0/DOS-asm/b91enc.asm\n-rw-r--r-- 0/0            5034 2006-11-02 05:13 base91-0.6.0/Java/b91cli.java\n-rw-r--r-- 0/0            3297 2006-11-02 05:13 base91-0.6.0/Java/basE91.java\n-rw-r--r-- 0/0            1526 2006-11-02 05:13 base91-0.6.0/Java/license.txt\n-rw-r--r-- 0/0             793 2006-11-02 05:13 base91-0.6.0/Java/readme.txt\n-rw-r--r-- 0/0             112 2006-09-04 03:00 base91-0.6.0/Java/manifest.mf\n-rwxr-xr-x 0/0             178 2006-11-02 05:13 base91-0.6.0/Java/build_jar.sh\n-rw-r--r-- 0/0            7502 2006-11-02 05:13 base91-0.6.0/cli.c\n-rw-r--r-- 0/0            5066 2006-11-02 05:13 base91-0.6.0/base91.c\n-rw-r--r-- 0/0            1501 2006-11-02 05:13 base91-0.6.0/LICENSE\n-rw-r--r-- 0/0             561 2006-11-02 05:13 base91-0.6.0/base91.h\n-rw-r--r-- 0/0            2360 2006-11-02 05:13 base91-0.6.0/README\n-rw-r--r-- 0/0            1762 2006-11-02 05:13 base91-0.6.0/base91.1\n-rw-r--r-- 0/0             903 2006-09-04 03:00 base91-0.6.0/Makefile\n-rw-r--r-- 0/0            2330 2006-11-02 05:13 base91-0.6.0/NEWS\n$ tar xf base91-0.6.0.tar.gz\n$ cd base91-0.6.0\n$ make\n$ ./base91 -h\nUsage: base91 [OPTION]... [FILE]\nbasE91 encode or decode FILE, or standard input, to standard output.\n\n  -d, --decode          decode data\n  -m SIZE               use SIZE bytes of memory for buffers (suffixes b, K, M)\n  -o, --output=FILE     write to FILE instead of standard output\n  -v, --verbose         verbose mode\n  -w, --wrap=COLS       wrap encoded lines after COLS characters (default 76)\n  --help                display this help and exit\n  --version             output version information and exit\n\nWith no FILE, or when FILE is -, read standard input.</code></pre>\n</div>\n</div>\n<div class=\"paragraph\">\n<p>encode\u3057\u3066decode\u3057\u3066\u307f\u307e\u3059\uff0e<br />\n\u5f53\u305f\u308a\u524d\u3067\u3059\u304c\uff0cencode, decode\u3057\u3066\u3082diff\u3082hash\u3082\u540c\u3058\u3067\u3059\uff0e</p>\n</div>\n<div class=\"listingblock bash\">\n<div class=\"content\">\n<pre class=\"highlight\"><code>$ ./base91 ./base91 -o ./base91.base91\n$ ./base91 -d ./base91.base91 -o ./base91.tmp\n$ diff ./base91 ./base91.tmp\n$ sha512sum ./base91\nbc903be7c5b694841a9d0303351846f80f4798ad8848e8f298cf2c4818c68a2270b065db495b969503b25cdf672632e1cced18094f935fed47b75718c3c3e976  ./base91\n$ ./base91 ./base91 | ./base91 -d | sha512sum\nbc903be7c5b694841a9d0303351846f80f4798ad8848e8f298cf2c4818c68a2270b065db495b969503b25cdf672632e1cced18094f935fed47b75718c3c3e976  -</code></pre>\n</div>\n</div>\n<div class=\"paragraph\">\n<p><code>basE91, base64, base32, uudecode</code> \u3067\u5909\u63db\u3057\u3066\u307f\u307e\u3059\uff0e<br />\n<code>basE91</code> \u304c\u4e00\u756a\u5c0f\u3055\u3044\u3067\u3059\u306d</p>\n</div>\n<div class=\"listingblock bash\">\n<div class=\"content\">\n<pre class=\"highlight\"><code>$ ls --block-size=1 -s ./base91\n16384 ./base91\n$ ./base91 ./base91 | wc -c\n17340\n$ base64 ./base91 | wc -c\n19615\n$ uuencode ./base91 - | wc -c\n20024\n$ base32 ./base91 | wc -c\n23538</code></pre>\n</div>\n</div>\n<div class=\"paragraph\">\n<p>\u5727\u7e2e\u3059\u308b\u3068\u5927\u5206\u5c0f\u3055\u304f\u306a\u308a\u307e\u3059\uff0e\u5727\u7e2e\u306e\u307b\u3046\u304c\u305a\u3063\u3068\u52b9\u304d\u307e\u3059\u306d\uff0e</p>\n</div>\n<div class=\"listingblock bash\">\n<div class=\"content\">\n<pre class=\"highlight\"><code>$ xz -c ./base91 | wc -c\n4528\n$ xz -c ./base91 | ./base91 | wc -c\n5640\n$ xz -c ./base91 | base64 | wc -c\n6120\n$ xz -c ./base91 | uuencode - | wc -c\n6260\n$ xz -c ./base91 | base32 | wc -c\n7344</code></pre>\n</div>\n</div>\n<div class=\"paragraph\">\n<p>\u4ed6\u306e\u30d5\u30a1\u30a4\u30eb\u3082\u8a66\u3057\u3066\u307f\u307e\u3059\uff0e<code>/usr/bin</code> \u4ee5\u4e0b\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u9069\u5f53\u306b\u898b\u7e55\u3063\u3066\u6bd4\u8f03x5\u3067\u3059\uff0e</p>\n</div>\n<div class=\"listingblock bash\">\n<div class=\"content\">\n<pre class=\"highlight\"><code>#!/bin/bash\n\nXZ=`mktemp`\nfor i in `seq 1 5`\ndo\n  CMD=`find /usr/bin -type f | shuf -n 1`\n  echo $CMD\n  echo -n \"raw  \"\n  stat -c %s $CMD\n  xz -9 -c $CMD &gt; $XZ\n  echo -n \"xz \"\n  stat -c %s $XZ\n  echo -n \"xz.uu  \"\n  uuencode $XZ - | wc -c\n  echo -n \"xz.base64  \"\n  base64 $XZ | wc -c\n  echo -n \"xz.base91  \"\n  base91 $XZ | wc -c\ndone\nrm $XZ</code></pre>\n</div>\n</div>\n<div class=\"listingblock shell\">\n<div class=\"content\">\n<pre class=\"highlight\"><code>$ bash ./bin2ascii.bash | column -t\n/usr/bin/lxc-snapshot\nraw                          27632\nxz                           6756\nxz.uu                        9328\nxz.base64                    9127\nxz.base91                    8418\n/usr/bin/dh_installtmpfiles\nraw                          3263\nxz                           1540\nxz.uu                        2144\nxz.base64                    2084\nxz.base91                    1917\n/usr/bin/pbmtogo\nraw                          10384\nxz                           3164\nxz.uu                        4380\nxz.base64                    4276\nxz.base91                    3942\n/usr/bin/chartread\nraw                          3966528\nxz                           772956\nxz.uu                        1064980\nxz.base64                    1044169\nxz.base91                    963047\n/usr/bin/spamassassin\nraw                          29898\nxz                           9608\nxz.uu                        13258\nxz.base64                    12981\nxz.base91                    11971</code></pre>\n</div>\n</div>\n<div class=\"paragraph\">\n<p>\u304a\u307e\u3051?armel\u3067static link\u306a\u30d0\u30a4\u30ca\u30ea\u3092\u4f5c\u3063\u3066\u307f\u307e\u3057\u305f\uff0e<a href=\"https://matoken.org/blog/2020/07/24/hello-world-in-sipeed-lichee-nano/\">Sipeed Lichee Nano</a> \u3067\u52d5\u304b\u306a\u3044\u304b\u306a?\u3068\uff0e</p>\n</div>\n<div class=\"listingblock shell\">\n<div class=\"content\">\n<pre class=\"highlight\"><code>$ git diff HEAD~~ Makefile\ndiff --git a/Makefile b/Makefile\nindex 246aede..129acff 100644\n--- a/Makefile\n+++ b/Makefile\n@@ -1,7 +1,7 @@\n-CFLAGS = -Wall -W -O2\n-LDFLAGS = -s\n+CFLAGS = -static -Wall -W -O2\n+LDFLAGS = -static -s\n\n-CC = gcc\n+CC = arm-linux-gnueabi-gcc\n INSTALL = install\n INSTALL_DATA = $(INSTALL) -m 444\n INSTALL_PROGRAM = $(INSTALL) -m 555</code></pre>\n</div>\n</div>\n<div class=\"paragraph\">\n<p><code>qemu-arm-static</code> \u3067\u306f\u52d5\u304f\u306e\u3092\u78ba\u8a8d\u3057\u305f\u3051\u3069\u5b9f\u6a5f\u3067\u306f\u672a\u78ba\u8a8d\u3067\u3059\uff0e</p>\n</div>\n<div class=\"listingblock shell\">\n<div class=\"content\">\n<pre class=\"highlight\"><code>$ file ./base91\n./base91: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), statically linked, BuildID[sha1]=88ec4ccbf69c4bb41640b5de63b6b5373b7e5365, for GNU/Linux 3.2.0, stripped\n$ ldd ./base91\n        not a dynamic executable\n$ echo &#x1f63a; | qemu-arm-static ./base91 | pee cat \"qemu-arm-static ./base91 -d\"\n=~m6xHA\n&#x1f63a;</code></pre>\n</div>\n</div>\n<div class=\"paragraph\">\n<p>\u4ee5\u4e0b\u306b\u30d0\u30a4\u30ca\u30ea\u3068uuencode\u3057\u305f\u3082\u306e\u304c\u7f6e\u3044\u3066\u3042\u308a\u307e\u3059\uff0e</p>\n</div>\n<div class=\"ulist\">\n<ul>\n<li><a href=\"https://github.com/matoken/basE91/releases/tag/0.6.0\" class=\"bare\">https://github.com/matoken/basE91/releases/tag/0.6.0</a></li>\n<li><a href=\"https://gist.github.com/matoken/c2bc8dadfdcb00da99fd1b4c2f12ce1c\" class=\"bare\">https://gist.github.com/matoken/c2bc8dadfdcb00da99fd1b4c2f12ce1c</a></li>\n</ul>\n</div>\n<div class=\"paragraph\">\n<p>blog\u5143\u306ememo</p>\n</div>\n<div class=\"ulist\">\n<ul>\n<li><a href=\"https://wiki.matoken.org/unix/commands/basE91\">unix:commands:base91 [wiki.matoken.org</a>]</li>\n</ul>\n</div>\n<div class=\"listingblock\">\n<div class=\"title\">\u74b0\u5883</div>\n<div class=\"content\">\n<pre>$ dpkg-query -W gcc-10-arm-linux-gnueabi qemu-user-static gcc coreutils sharutils\ncoreutils       8.32-3\ngcc     4:10.1.0-1\ngcc-10-arm-linux-gnueabi        10.2.0-3cross2\nqemu-user-static        1:5.0-13\nsharutils       1:4.15.2-5\n$ lsb_release -dr\nDescription:    Debian GNU/Linux bullseye/sid\nRelease:        unstable\n$ uname -m\nx86_64</pre>\n</div>\n</div>\n",
            "content_text": "\u30d0\u30a4\u30ca\u30ea\u3092\u5229\u7528\u3067\u304d\u306a\u3044\u74b0\u5883\u3067\u306e\u30c7\u30fc\u30bf\u8ee2\u9001\u6642\u306bUNIX\u74b0\u5883\u3067\u306f\u53e4\u304f\u306f uudecode, uuencode \u304c\uff0c\u65e5\u672c\u306e\u30d1\u30bd\u30b3\u30f3\u901a\u4fe1\u3067\u306f ish \u306a\u3069\u304c\u4f7f\u308f\u308c\u3066\u3044\u307e\u3057\u305f\uff0e\u8fd1\u9803\u306f base64 \u304c\u3088\u304f\u4f7f\u308f\u308c\u3066\u3044\u308b\u3088\u3046\u306b\u611f\u3058\u307e\u3059\uff0e\n\n\n\u3053\u308c\u3089\u306e\u30c4\u30fc\u30eb\u3067\u306f\u30d0\u30a4\u30ca\u30ea\u3092ASCII\u3067\u8868\u73fe\u3059\u308b\u305f\u3081\u30b5\u30a4\u30ba\u304c\u5927\u304d\u304f\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\uff0e\u3067\u3082\u5168\u3066\u306eASCII\u3092\u4f7f\u3063\u3066\u3044\u307e\u305b\u3093\uff0e\n\n\n\u4eca\u56de\u898b\u3064\u3051\u305fbasE91\u306fASCII\u306e0x21-0x7E\u306e\u3046\u3061 -, \\, ' \u3092\u9664\u3044\u305f91\u6587\u5b57\u3092\u4f7f\u3063\u3066\u30c7\u30b3\u30fc\u30c9\u3059\u308b\u3053\u3068\u3067\u52b9\u7387\u3088\u304f\u3059\u308b\u3082\u306e\u306e\u3088\u3046\u3067\u3059\uff0e\n\n\n\nbasE91 &#8211; binary to ASCII text encoding\n\n\n\n\u65e9\u901f\u8a66\u3057\u3066\u307f\u307e\u3059\uff0eDebian\u30d1\u30c3\u30b1\u30fc\u30b8\u304c\u306a\u3044\u304b\u306a\u3068\u63a2\u3057\u307e\u3057\u305f\u304c\u3042\u308a\u307e\u305b\u3093\u3067\u3057\u305f\uff0e\n\n\n(\u4ee5\u524d\u8981\u671b\u3055\u308c\u305f\u3053\u3068\u306f\u3042\u308b\u3088\u3046 #706078 &#8211; RFP: base91\u2009\u2014\u2009base91 encoder/decoder &#8211; Debian Bug report logs )\n\n\nsource\u3092\u8cb0\u3063\u3066\u304d\u3066make\u3057\u307e\u3059\uff0e\n\u203bhash\u306f\u300c basE91 &#8211; Browse /basE91/0.6.0 at SourceForge.net \u300d\u3067\u78ba\u8a8d\u3067\u304d\u308b\uff0e\n\n\n\n$ wget http://downloads.sourceforge.net/base91/base91-0.6.0.tar.gz\n$ md5sum base91-0.6.0.tar.gz\ne227841d900cc463a162bd79775aeb54  base91-0.6.0.tar.gz\n$ sha1sum base91-0.6.0.tar.gz\n00cfd573ec8b3d0160dbf53e2c7a49b99a1aa720  base91-0.6.0.tar.gz\n$ tar tvf base91-0.6.0.tar.gz\n-rw-r--r-- 0/0             575 2005-06-25 00:00 base91-0.6.0/AWK/README\n-rwxr-xr-x 0/0             727 2006-11-02 05:13 base91-0.6.0/AWK/b91dec.awk\n-rw-r--r-- 0/0             932 2006-09-04 03:00 base91-0.6.0/PHP4/README\n-rw-r--r-- 0/0            1513 2006-11-02 05:13 base91-0.6.0/PHP4/base91.php\n-rw-r--r-- 0/0             149 2006-09-04 03:00 base91-0.6.0/test/Makefile\n-rw-r--r-- 0/0            4265 2006-11-02 05:13 base91-0.6.0/test/test.sh\n-rw-r--r-- 0/0             332 2006-08-25 17:00 base91-0.6.0/DOS-asm/readme.txt\n-rw-r--r-- 0/0            3487 2006-11-02 05:13 base91-0.6.0/DOS-asm/b91enc.asm\n-rw-r--r-- 0/0            5034 2006-11-02 05:13 base91-0.6.0/Java/b91cli.java\n-rw-r--r-- 0/0            3297 2006-11-02 05:13 base91-0.6.0/Java/basE91.java\n-rw-r--r-- 0/0            1526 2006-11-02 05:13 base91-0.6.0/Java/license.txt\n-rw-r--r-- 0/0             793 2006-11-02 05:13 base91-0.6.0/Java/readme.txt\n-rw-r--r-- 0/0             112 2006-09-04 03:00 base91-0.6.0/Java/manifest.mf\n-rwxr-xr-x 0/0             178 2006-11-02 05:13 base91-0.6.0/Java/build_jar.sh\n-rw-r--r-- 0/0            7502 2006-11-02 05:13 base91-0.6.0/cli.c\n-rw-r--r-- 0/0            5066 2006-11-02 05:13 base91-0.6.0/base91.c\n-rw-r--r-- 0/0            1501 2006-11-02 05:13 base91-0.6.0/LICENSE\n-rw-r--r-- 0/0             561 2006-11-02 05:13 base91-0.6.0/base91.h\n-rw-r--r-- 0/0            2360 2006-11-02 05:13 base91-0.6.0/README\n-rw-r--r-- 0/0            1762 2006-11-02 05:13 base91-0.6.0/base91.1\n-rw-r--r-- 0/0             903 2006-09-04 03:00 base91-0.6.0/Makefile\n-rw-r--r-- 0/0            2330 2006-11-02 05:13 base91-0.6.0/NEWS\n$ tar xf base91-0.6.0.tar.gz\n$ cd base91-0.6.0\n$ make\n$ ./base91 -h\nUsage: base91 [OPTION]... [FILE]\nbasE91 encode or decode FILE, or standard input, to standard output.\n\n  -d, --decode          decode data\n  -m SIZE               use SIZE bytes of memory for buffers (suffixes b, K, M)\n  -o, --output=FILE     write to FILE instead of standard output\n  -v, --verbose         verbose mode\n  -w, --wrap=COLS       wrap encoded lines after COLS characters (default 76)\n  --help                display this help and exit\n  --version             output version information and exit\n\nWith no FILE, or when FILE is -, read standard input.\n\n\n\nencode\u3057\u3066decode\u3057\u3066\u307f\u307e\u3059\uff0e\n\u5f53\u305f\u308a\u524d\u3067\u3059\u304c\uff0cencode, decode\u3057\u3066\u3082diff\u3082hash\u3082\u540c\u3058\u3067\u3059\uff0e\n\n\n\n$ ./base91 ./base91 -o ./base91.base91\n$ ./base91 -d ./base91.base91 -o ./base91.tmp\n$ diff ./base91 ./base91.tmp\n$ sha512sum ./base91\nbc903be7c5b694841a9d0303351846f80f4798ad8848e8f298cf2c4818c68a2270b065db495b969503b25cdf672632e1cced18094f935fed47b75718c3c3e976  ./base91\n$ ./base91 ./base91 | ./base91 -d | sha512sum\nbc903be7c5b694841a9d0303351846f80f4798ad8848e8f298cf2c4818c68a2270b065db495b969503b25cdf672632e1cced18094f935fed47b75718c3c3e976  -\n\n\n\nbasE91, base64, base32, uudecode \u3067\u5909\u63db\u3057\u3066\u307f\u307e\u3059\uff0e\nbasE91 \u304c\u4e00\u756a\u5c0f\u3055\u3044\u3067\u3059\u306d\n\n\n\n$ ls --block-size=1 -s ./base91\n16384 ./base91\n$ ./base91 ./base91 | wc -c\n17340\n$ base64 ./base91 | wc -c\n19615\n$ uuencode ./base91 - | wc -c\n20024\n$ base32 ./base91 | wc -c\n23538\n\n\n\n\u5727\u7e2e\u3059\u308b\u3068\u5927\u5206\u5c0f\u3055\u304f\u306a\u308a\u307e\u3059\uff0e\u5727\u7e2e\u306e\u307b\u3046\u304c\u305a\u3063\u3068\u52b9\u304d\u307e\u3059\u306d\uff0e\n\n\n\n$ xz -c ./base91 | wc -c\n4528\n$ xz -c ./base91 | ./base91 | wc -c\n5640\n$ xz -c ./base91 | base64 | wc -c\n6120\n$ xz -c ./base91 | uuencode - | wc -c\n6260\n$ xz -c ./base91 | base32 | wc -c\n7344\n\n\n\n\u4ed6\u306e\u30d5\u30a1\u30a4\u30eb\u3082\u8a66\u3057\u3066\u307f\u307e\u3059\uff0e/usr/bin \u4ee5\u4e0b\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u9069\u5f53\u306b\u898b\u7e55\u3063\u3066\u6bd4\u8f03x5\u3067\u3059\uff0e\n\n\n\n#!/bin/bash\n\nXZ=`mktemp`\nfor i in `seq 1 5`\ndo\n  CMD=`find /usr/bin -type f | shuf -n 1`\n  echo $CMD\n  echo -n \"raw  \"\n  stat -c %s $CMD\n  xz -9 -c $CMD &gt; $XZ\n  echo -n \"xz \"\n  stat -c %s $XZ\n  echo -n \"xz.uu  \"\n  uuencode $XZ - | wc -c\n  echo -n \"xz.base64  \"\n  base64 $XZ | wc -c\n  echo -n \"xz.base91  \"\n  base91 $XZ | wc -c\ndone\nrm $XZ\n\n\n\n\n$ bash ./bin2ascii.bash | column -t\n/usr/bin/lxc-snapshot\nraw                          27632\nxz                           6756\nxz.uu                        9328\nxz.base64                    9127\nxz.base91                    8418\n/usr/bin/dh_installtmpfiles\nraw                          3263\nxz                           1540\nxz.uu                        2144\nxz.base64                    2084\nxz.base91                    1917\n/usr/bin/pbmtogo\nraw                          10384\nxz                           3164\nxz.uu                        4380\nxz.base64                    4276\nxz.base91                    3942\n/usr/bin/chartread\nraw                          3966528\nxz                           772956\nxz.uu                        1064980\nxz.base64                    1044169\nxz.base91                    963047\n/usr/bin/spamassassin\nraw                          29898\nxz                           9608\nxz.uu                        13258\nxz.base64                    12981\nxz.base91                    11971\n\n\n\n\u304a\u307e\u3051?armel\u3067static link\u306a\u30d0\u30a4\u30ca\u30ea\u3092\u4f5c\u3063\u3066\u307f\u307e\u3057\u305f\uff0eSipeed Lichee Nano \u3067\u52d5\u304b\u306a\u3044\u304b\u306a?\u3068\uff0e\n\n\n\n$ git diff HEAD~~ Makefile\ndiff --git a/Makefile b/Makefile\nindex 246aede..129acff 100644\n--- a/Makefile\n+++ b/Makefile\n@@ -1,7 +1,7 @@\n-CFLAGS = -Wall -W -O2\n-LDFLAGS = -s\n+CFLAGS = -static -Wall -W -O2\n+LDFLAGS = -static -s\n\n-CC = gcc\n+CC = arm-linux-gnueabi-gcc\n INSTALL = install\n INSTALL_DATA = $(INSTALL) -m 444\n INSTALL_PROGRAM = $(INSTALL) -m 555\n\n\n\nqemu-arm-static \u3067\u306f\u52d5\u304f\u306e\u3092\u78ba\u8a8d\u3057\u305f\u3051\u3069\u5b9f\u6a5f\u3067\u306f\u672a\u78ba\u8a8d\u3067\u3059\uff0e\n\n\n\n$ file ./base91\n./base91: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), statically linked, BuildID[sha1]=88ec4ccbf69c4bb41640b5de63b6b5373b7e5365, for GNU/Linux 3.2.0, stripped\n$ ldd ./base91\n        not a dynamic executable\n$ echo &#x1f63a; | qemu-arm-static ./base91 | pee cat \"qemu-arm-static ./base91 -d\"\n=~m6xHA\n&#x1f63a;\n\n\n\n\u4ee5\u4e0b\u306b\u30d0\u30a4\u30ca\u30ea\u3068uuencode\u3057\u305f\u3082\u306e\u304c\u7f6e\u3044\u3066\u3042\u308a\u307e\u3059\uff0e\n\n\n\nhttps://github.com/matoken/basE91/releases/tag/0.6.0\nhttps://gist.github.com/matoken/c2bc8dadfdcb00da99fd1b4c2f12ce1c\n\n\n\nblog\u5143\u306ememo\n\n\n\nunix:commands:base91 [wiki.matoken.org]\n\n\n\n\u74b0\u5883\n\n$ dpkg-query -W gcc-10-arm-linux-gnueabi qemu-user-static gcc coreutils sharutils\ncoreutils       8.32-3\ngcc     4:10.1.0-1\ngcc-10-arm-linux-gnueabi        10.2.0-3cross2\nqemu-user-static        1:5.0-13\nsharutils       1:4.15.2-5\n$ lsb_release -dr\nDescription:    Debian GNU/Linux bullseye/sid\nRelease:        unstable\n$ uname -m\nx86_64",
            "date_published": "2020-07-31T07:54:02+09:00",
            "date_modified": "2020-07-31T08:02:42+09:00",
            "authors": [
                {
                    "name": "matoken",
                    "url": "https://matoken.org/blog/author/matoken/",
                    "avatar": "https://secure.gravatar.com/avatar/1865f695c4eecc844385acef2f078255036adccd42c254580ea3844543ab56d9?s=512&d=mm&r=g"
                }
            ],
            "author": {
                "name": "matoken",
                "url": "https://matoken.org/blog/author/matoken/",
                "avatar": "https://secure.gravatar.com/avatar/1865f695c4eecc844385acef2f078255036adccd42c254580ea3844543ab56d9?s=512&d=mm&r=g"
            },
            "tags": [
                "ascii",
                "base64",
                "basE91",
                "uudecode",
                "uuencode",
                "Debian",
                "Linux",
                "sid"
            ]
        }
    ]
}