From 32623ec3dda5c5ef5247f5cf9205bc199d3f40db Mon Sep 17 00:00:00 2001 From: Deven Blake Date: Fri, 6 Aug 2021 15:31:31 -0400 Subject: [PATCH] more --- homepage/knowledge/true.html | 3 +++ 1 file changed, 3 insertions(+) diff --git a/homepage/knowledge/true.html b/homepage/knowledge/true.html index 86a8730..6c12474 100644 --- a/homepage/knowledge/true.html +++ b/homepage/knowledge/true.html @@ -43,6 +43,7 @@ exit 0 This happens to be nearly identical in source to the implementation used by NetBSD.

+Python has the same 0 byte true(1) implementation feature as most shells. Here's false(1) in Python rather than true(1) to demonstrate how exiting with an arbitrary exit status can be done: 


@@ -56,6 +57,8 @@ In some shells, true(1) is a shell built-in command, so running true(1), from the GNU coreutils, deserves a special mention, as it's eighty lines long and directly includes four C header files.
 This is not a joke.
 Their true.c is 2.3 kilobytes, parses the arguments --help and --version (only if either are the first argument to the program), and I don't know how big the executable ends up being because the first thing I do when I take control of a GNU system is printf "#/bin/sh\nexit 0\n"|dd of="$(which true)";chmod +x "$(which true)" (use at your own risk).
+This implementation is not POSIX compliant.
+

 
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